Search
Crisscrossing fire protection piping
Fire Protection Grooved Coupling
HomeProductsFire Protection Piping and ConduitFire Protection PipingFire Protection Grooved Coupling

High-Performance Fire Protection Grooved Coupling Solutions

Fire protection grooved couplings provide high-quality piping connections, widely used in fire water supply systems, sprinkler systems, and industrial piping connections.

Manufactured from premium ductile iron materials, our products deliver reliable sealing performance and excellent pressure resistance. Certified with UL and FM approvals, they meet international fire protection system standards and provide safe, efficient, and reliable piping connection solutions for customers worldwide.

Fire Protection Grooved Coupling PDF
Fire protection grooved coupling on white background
Features
  • Cost-Effective Installation: Quick installation without welding, special training, or complex tools helps reduce labor requirements and overall project costs.
  • Flexible and Rigid Connection Options: Flexible couplings accommodate thermal movement, vibration, and pipe deflection, while rigid couplings provide a strong, fixed connection comparable to welded systems.
  • Reliable Safety Performance: The coupling housing fully engages around the pipe circumference, ensuring secure pipe connection under the rated maximum working pressure.
  • Vibration and Noise Control: The combination of pipe-end clearance and resilient gasket design helps absorb vibration and minimize noise transmission.
  • Simple Maintenance and Replacement: Easy disassembly allows fast access for pipeline inspection, cleaning, repair, and maintenance.
Category
  • XGQT01/XGQT01P
  • XGQT02/XGQT02P
  • XGQT02B
  • XGQT02D
  • XGQT02H
  • XGQT02K
  • XGQT31
  • XGQT31A
  • XGQT32
  • XGQT35
  • 101T
  • H305
  • H307
  • KRJ02
  • XGQT02W
  • XGQT01H
XGQT01/XGQT01P Rigid Coupling
Product Description
  • Type: Ductile cast iron grooved rigid coupling.
  • Applicable Pipes: Suitable for Schedule 10, Schedule 30, Schedule 40, GB/T 3091, and WGalweld 7 specification pipes.
  • Specification Size: 25 mm to 300 mm (1 inch to 12 inches).
  • Certification Standards: Rated pressure complies with UL and FM certification standards.
  • XGQT01 Features: Standard rigid grooved coupling.
  • XGQT01P Features: On the basis of XGQT01, enhanced anti-corrosion spray coating treatment is added, providing better corrosion resistance and making it more suitable for humid, outdoor, and corrosive environments.
Rigid coupling on white background
Technical Data
Table 1: XGQT01
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
25
1		 33.7
1.327		 500
3.45		 2 - M10 × 45 57.5
2.264		 99
3.898		 43.5
1.713		 UL FM
32
1-1/4		 42.4
1.669		 500
3.45		 2 - M10 × 45 70
2.756		 106
4.173		 44
1.732		 UL FM
40
1-1/2		 48.3
1.900		 500
3.45		 2 - M10 × 45 73
2.874		 108
4.252		 44
1.732		 UL FM
50
2		 60.3
2.375		 500
3.45		 2 - M10 × 55 87
3.425		 123
4.843		 44
1.732		 UL FM
65
2-1/2		 73.0
2.875		 500
3.45		 2 - M10 × 55 100
3.937		 138
5.433		 44
1.732		 UL FM
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M10 × 55 103
4.055		 142
5.591		 45
1.772		 UL FM
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 60 117
4.606		 166
6.535		 45
1.772		 UL FM
100
4		 108.0
4.250		 500
3.45		 2 - M12 × 65 137
5.393		 188
7.401		 48
1.889		 UL FM
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 65 139
5.472		 190
7.480		 49
1.929		 UL FM
125
5		 133.0
5.250		 300
2.07		 2 - M12 × 75 162.6
6.401		 216
8.504		 48
1.889		 UL FM
125
5		 139.7
5.500		 400
2.75		 2 - M12 × 75 168
6.614		 218
8.583		 49
1.929		 UL FM
125
5		 141.3
5.563		 400
2.75		 2 - M12 × 75 167
6.575		 219
8.622		 49
1.929		 UL FM
150
6		 159.0
6.250		 300
2.07		 2 - M12 × 75 189.4
7.456		 240
9.448		 48
1.889		 UL FM
150
6		 165.1
6.500		 400
2.75		 2 - M12 × 75 193
7.598		 241
9.488		 49
1.929		 UL FM
150
6		 168.3
6.625		 400
2.75		 2 - M12 × 75 198.5
7.815		 249
9.803		 50
1.969		 UL FM
200
8		 219.1
8.625		 300
2.07		 2 - M16 × 85 253
9.961		 320
12.598		 59
2.323		 UL FM
250
10		 273
10.748		 300
2.07		 2 - M22 × 130 335
13.189		 426
16.772		 68
2.677		 UL FM
300
12		 323.9
12.752		 300
2.07		 2 - M22 × 130 380
14.96		 470
18.504		 65
2.559		 UL FM
Table 2: XGQT01P
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
125
5		 139.7
5.500		 500
3.45		 2 - M16 × 85 169.5
6.673		 229
9.016		 52
2.047		 UL FM
125
5		 141.3
5.563		 500
3.45		 2 - M16 × 85 170.5
6.713		 232
9.134		 52
2.047		 UL FM
150
6		 165.1
6.50		 500
3.45		 2 - M16 × 85 195
7.677		 256
10.079		 52
2.047		 UL FM
150
6		 168.3
6.625		 500
3.45		 2 - M16 × 85 202.5
7.972		 263.5
10.374		 52
2.047		 UL FM
200
8		 219.1
8.625		 500
3.45		 2 - M20 × 120 256.5
10.098		 336
13.228		 62
2.441		 UL FM
250
10		 273.0
10.750		 500
3.45		 2 - M24 × 130 326
12.835		 410
16.142		 65
2.441		 UL FM
300
12		 323.9
12.750		 500
3.45		 2 - M24 × 130 384
15.118		 472
18.583		 66
2.598		 UL FM
XGQT02/XGQT02P Flexible Coupling
Product Description
  • Type: Grooved flexible coupling made of ductile cast iron.
  • Applicable Pipes: Applicable for Schedule 10, Schedule 30, Schedule 40, GB/T 3091, and WGalweld 7 standard pipes.
  • Specification: 25 mm to 400 mm (1 inch to 16 inches).
  • Certification Standard: Rated pressure meets UL and FM certification standards.
  • XGQT02 Feature: Standard grooved flexible coupling.
  • XGQT02P Feature: Uses enhanced spray corrosion-resistant treatment, suitable for underground, outdoor, coastal, and corrosive environments.
Flexible coupling on white background
Technical Data
Table 3: XGQT02
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
25
1		 33.7
1.327		 500
3.45		 2 - M10 × 45 60
2.362		 98
3.858		 43.5
1.713		 UL FM
32
1-1/4		 42.4
1.669		 500
3.45		 2 - M10 × 45 67
2.638		 106
4.173		 44
1.732		 UL FM
40
1-1/2		 48.3
1.900		 500
3.45		 2 - M10 × 45 73
2.874		 108
4.252		 44
1.732		 UL FM
50
2		 60.3
2.375		 500
3.45		 2 - M10 × 55 87
3.425		 123
4.843		 44
1.732		 UL FM
65
2-1/2		 73.0
2.875		 500
3.45		 2 - M10 × 55 100
3.937		 138
5.433		 44
1.732		 UL FM
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M10 × 55 103
4.055		 142
5.591		 45
1.772		 UL FM
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 60 117
4.606		 166
6.535		 45
1.772		 UL FM
100
4		 108.0
4.250		 500
3.45		 2 - M12 × 65 137
5.393		 188
7.401		 48
1.889		 UL FM
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 65 139
5.472		 190
7.480		 49
1.929		 UL FM
125
5		 133.0
5.250		 300
2.07		 2 - M12 × 75 162.6
6.401		 216
8.504		 48
1.889		 UL FM
125
5		 139.7
5.500		 400
2.75		 2 - M12 × 75 168
6.614		 218
8.583		 49
1.929		 UL FM
125
5		 141.3
5.563		 400
2.75		 2 - M12 × 75 167
6.575		 219
8.622		 49
1.929		 UL FM
150
6		 159.0
6.250		 300
2.75		 2 - M12 × 75 189.4
7.456		 240
9.448		 48
1.889		 UL FM
150
6		 165.1
6.500		 400
2.07		 2 - M12 × 75 193
7.598		 241
9.488		 49
1.929		 UL FM
150
6		 168.3
6.625		 400
2.75		 2 - M12 × 75 198.5
7.815		 249
9.803		 50
1.969		 UL FM
200
8		 219.1
8.625		 300
2.07		 2 - M16 × 85 253
9.961		 320
12.598		 59
2.323		 UL FM
250
10		 273
10.748		 300
2.07		 2 - M22 × 130 317
12.48		 401
10.787		 63
2.48		 UL FM
300
12		 323.9
12.752		 300
2.07		 2 - M22 × 130 375
14.764		 455
17.913		 64
2.52		 UL FM
Table 4: XGQT02P
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
125
5		 139.7
5.500		 500
3.45		 2 - M16 × 85 169.5
6.673		 229
9.016		 52
2.047		 UL FM
125
5		 141.3
5.563		 500
3.45		 2 - M16 × 85 170.5
6.713		 232
9.134		 52
2.047		 UL FM
150
6		 165.1
6.50		 500
3.45		 2 - M16 × 85 195
7.677		 256
10.079		 52
2.047		 UL FM
150
6		 168.3
6.625		 500
3.45		 2 - M16 × 85 202.5
7.972		 263.5
10.374		 52
2.047		 UL FM
200
8		 219.1
8.625		 500
3.45		 2 - M20 × 120 256.5
10.098		 336
13.228		 62
2.441		 UL FM
250
10		 273.0
10.750		 500
3.45		 2 - M24 × 130 326
12.835		 410
16.142		 65
2.441		 UL FM
300
12		 323.9
12.750		 500
3.45		 2 - M24 × 130 384
15.118		 472
18.583		 66
2.598		 UL FM
XGQT02B Coupling Reducing Flexible
Product Description
  • Type: Ductile cast iron grooved flexible reducing coupling.
  • Applicable Pipes: Suitable for Schedule 10, Schedule 40, and GB/T 3091 standard pipes.
  • Specification Size: 50 mm to 200 mm (2 inches to 8 inches).
  • Certification Standard: Pressure rating meets UL and FM certification standards.
  • Feature: A flexible coupling that can directly connect two grooved pipes of different diameters, used to replace the combination of a reducer plus two ordinary couplings.
  • Typical Installation Locations: Firefighting main pipe reducer; sprinkler branch connection; pump room piping.
Coupling reducing flexible on white background
Technical Data
Table 5: XGQT02B
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
40 x 32
1-1/2 x 1-1/4		 48.3 x 42.4
1.900 x 1.669		 300
2.07		 2 - M10 × 45 73.6
2.899		 111
4.37		 44
1.732		 UL FM
50 x 40
2 x 1-1/2		 60.3 x 48.3
2.375 x 1.900		 300
2.07		 2 - M10 × 55 90
3.543		 129
5.079		 47
1.850		 UL FM
65 x 40
2-1/2 x 1-1/2		 73.0 x 48.3
2.874 x 1.900		 300
2.07		 2 - M10 × 55 101
3.976		 137
5.394		 48
1.890		 UL FM
65 x 50
2-1/2 x 2		 73.0 x 60.3
2.874 x 2.375		 300
2.07		 2 - M10 × 55 101
3.976		 137
5.394		 48
1.890		 UL FM
65 x 40
2-1/2 x 1-1/2		 76.1 x 48.3
2.996 x 1.900		 300
2.07		 2 - M10 × 55 105
4.134		 140
5.512		 48
1.890		 UL FM
65 x 50
2-1/2 x 2		 76.1 x 60.3
2.996 x 2.375		 300
2.07		 2 - M10 × 55 105
4.134		 140
5.512		 48
1.890		 UL FM
65 x 65
2-1/2 x 2-1/2		 76.1 x 73.0
2.996 x 2.874		 300
2.07		 2 - M10 × 55 100.4
3.953		 141
5.551		 47
1.85		 UL FM
80 x 40
3 x 1-1/2		 88.9 x 48.3
3.500 x 1.900		 300
2.07		 2 - M12 × 65 120
4.724		 164
6.457		 48
1.890		 UL FM
80 x 50
3 x 2		 88.9 x 60.3
3.500 x 2.375		 300
2.07		 2 - M12 × 65 120
4.724		 164
6.457		 48
1.890		 UL FM
80 x 65
3 x 2-1/2		 88.9 x 73.0
3.500 x 2.874		 300
2.07		 2 - M12 × 65 120
4.724		 164
6.457		 48
1.890		 UL FM
80 x 65
3 x 2-1/2		 88.9 x 76.1
3.500 x 2.996		 300
2.07		 2 - M12 × 65 120
4.724		 164
6.457		 48
1.890		 UL FM
100 x 40
4 x 1-1/2		 114.3 x 48.3
4.500 x 1.900		 300
2.07		 2 - M12 × 65 150
5.906		 195
7.677		 49
1.929		 UL FM
100 x 50
4 x 2		 114.3 x 60.3
4.500 x 2.375		 300
2.07		 2 - M12 × 65 150
5.906		 195
7.677		 49
1.929		 UL FM
100 x 65
4 x 2-1/2		 114.3 x 73
4.500 x 2.874		 300
2.07		 2 - M12 × 65 150
5.906		 195
7.677		 49
1.929		 UL FM
100 x 65
4 x 2-1/2		 114.3 x 76.1
4.500 x 2.996		 300
2.07		 2 - M12 × 65 150
5.906		 195
7.677		 49
1.929		 UL FM
100 x 80
4 x 3		 114.3 x 88.9
4.500 x 3.500		 300
2.07		 2 - M12 × 65 150
5.906		 195
7.677		 49
1.929		 UL FM
150 x 100
6 x 4		 165.1 x 114.3
6.500 x 4.500		 300
2.07		 2 - M12 × 75 203
7.992		 235
9.252		 50
1.969
150 x 80
6 x 3		 168.3 x 88.9
6.625 x 3.500		 300
2.07		 2 - M12 × 75 203
7.992		 235
9.252		 50
1.969		 UL FM
150 x 100
6 x 4		 168.3 x 114.3
6.625 x 4.500		 300
2.07		 2 - M12 × 75 203
7.992		 235
9.252		 50
1.969		 UL FM
200 x 150
8 x 6		 219.1 x 168.3
8.625 x 6.625		 300
2.07		 2 - M16 × 110 264
10.394		 313
12.323		 60
2.362		 UL FM
XGQT02D Deep Grooved Flexible Coupling
Product Description
  • Type: Ductile cast iron deep grooved flexible coupling.
  • Size Specifications: 200 mm to 500 mm.
  • Certification Standard: UL certification.
  • Feature: Designed for deep groove processed pipes to improve compatibility and connection reliability between the coupling and groove.
  • Typical Installation Locations: Firefighting main pipe, sprinkler system, pump room connections.
Deep grooved flexible coupling on white background
Technical Data
Table 6: XGQT02D
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
200
8		 216.3
8.516		 250
1.72		 2 - M20 × 120 251.8
9.913		 328
12.913		 63
2.480		 UL
250
10		 267.4
10.528		 250
1.72		 2 - M20 × 120 309.6
12.189		 387
15.236		 64.5
2.539		 UL
300
12		 318.5
12.539		 300
2.07		 2 - M22 × 165 361.4
14.228		 448
17.638		 64.5
2.539		 UL
350
14		 355.6
14.00		 300
2.07		 3 - M22 × 100 411
16.181		 458
18.031		 75
2.953		 UL
400
16		 406.4
16.00		 300
2.07		 3 - M22 × 100 461
18.15		 508
20.00		 75
2.953		 UL
450
18		 457.2
18.00		 250
1.72		 3 - M24 × 130 515
20.276		 567
22.323		 79
3.228		 UL
500
20		 508
20.00		 250
1.72		 4 - M24 × 130 562
22.126		 666
26.22		 78.5
3.091		 UL
XGQT02H Heavy-duty Flexible Coupling
Product Description
  • Type: Ductile cast iron reinforced grooved flexible coupling.
  • Size Range: 350 mm to 600 mm.
  • Certification Standard: UL certification.
  • Features: A reinforced grooved flexible coupling that improves shell strength, locking capacity, and pressure reliability based on the standard XGQT02, while retaining flexible connection characteristics that absorb pipeline displacement, vibration, and thermal stress. Mainly used in large diameter, high pressure, and strong vibration firefighting and industrial pipeline systems.
  • Typical Installation Locations: Fire pump room outlet; main firefighting ring pipe; large diameter firefighting main pipe.
  • Reasons: High pressure; obvious water hammer; need for reliable connection.
Heavy-duty flexible coupling on white background
Technical Data
Table 7: XGQT02H
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
350
14		 355.6
14.00		 300
2.07		 3 - M22 × 100 406
15.984		 454
17.874		 75
2.953		 UL
400
16		 406.4
16.00		 250
1.72		 3 - M22 × 100 458
18.031		 507
19.961		 75
2.953		 UL
450
18		 457.2
18.00		 250
1.72		 3 - M22 × 100 507
19.961		 535
21.063		 82
3.228		 UL
500
20		 508
20.00		 250
1.72		 4 - M24 × 130 564
22.205		 663
26.102		 79
3.11		 UL
600
24		 609.6
24		 250
1.72		 4 - M24 × 130 672
26.457		 774
30.472		 79
3.11		 UL
XGQT02K Flexible Coupling
Product Description
  • Type: Ductile cast iron flexible grooved coupling.
  • Specification Size: 60.3 mm to 323.9 mm.
  • Certification Standards: FM and UL.
  • Features: The XGQT02K has a reinforced housing structure and bolt connections, improving pressure capacity and connection reliability. Compared to the standard XGQT02, it is better suited for high pressure, large diameter, or firefighting and industrial pipeline systems with higher connection safety requirements. Compared to XGQT02H, it leans more toward special structural optimization rather than purely heavy-duty design.
  • Typical Installation Locations: Firefighting main pipe; fire pump room; firefighting pipe network in high-rise buildings.
  • Application Conditions: High pressure; large diameter; special pipeline connection conditions.
Flexible coupling on white background
Technical Data
Table 8: XGQT02K
Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
60.3
2.375		 500
3.45		 2 - M12 × 60 87
3.425		 132
5.197		 45.5
1.791		 UL FM
73
2.875		 500
3.45		 2 - M12 × 65 103
4.055		 147.5
5.807		 46
1.811
76.1
3.000		 500
3.45		 2 - M12 × 65 105.5
4.153		 149.5
5.886		 46
1.811
88.9
3.500		 500
3.45		 2 - M12 × 75 117
4.606		 161
6.339		 46
1.811		 UL FM
114.3
4.500		 500
3.45		 2 - M16 × 85 145
5.709		 203
7.992		 51
2.008		 UL FM
139.7
5.500		 500
3.45		 2 - M16 × 85 173
6.811		 230
9.055		 51
2.008
159.0
6.250		 500
3.45		 2 - M16 × 85 193
7.598		 246
9.685		 50
1.968
165.1
6.50		 500
3.45		 2 - M16 × 85 199
7.835		 262
10.315		 52
2.047
168.3
6.625		 500
3.45		 2 - M20 × 120 205.5
8.090		 270
10.630		 54
2.126		 UL FM
216.3
8.516		 400
2.76		 2 - M22 × 130 258
10.157		 335
13.189		 63
2.480
219.1
8.625		 400
2.76		 2 - M22 × 130 270.5
10.650		 355
13.976		 64
2.520		 UL FM
267.4
10.527		 400
2.76		 2 - M24 × 165 320.5
12.618		 401
15.787		 64
2.520
273.0
10.750		 400
2.76		 2 - M24 × 165 329.5
12.972		 417
16.417		 66
2.598		 UL FM
318.5
12.539		 400
2.76		 2 - M24 × 165 375.8
14.795		 465
18.307		 64
2.520
323.9
12.750		 400
2.76		 2 - M24 × 165 383
15.079		 462
18.189		 67
2.638		 UL FM
XGQT31 Rigid Coupling
Product Description
  • Type: Ductile cast iron grooved rigid coupling.
  • Applicable Pipes: Specifically designed for Schedule 5, Schedule 10, Schedule 40, GB/T 3091, JIS G3452, WGalweld 5, and WGalweld 7 pipe specifications.
  • Specifications: 25 mm to 300 mm (1 inch to 12 inches).
  • Certification Standards: Rated pressure complies with UL and FM certification standards.
  • Features: Mainly designed for thin-walled pipes such as Schedule 5, Schedule 7, and Schedule 40, and has obtained FM and UL certifications. The main difference from the standard XGQT01 lies in the applicable pipe specifications and certification scope.
  • Typical Application Locations: Firefighting sprinkler main pipe, firefighting riser, firefighting ring pipe, fixed pipe sections in the pump room.
Rigid coupling on white background
Technical Data
Table 9: XGQT31
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
25
1		 33.7
1.327		 500
3.45		 2 - M10 × 45 58
2.283		 101
3.976		 44
1.732		 UL FM
32
1-1/4		 42.4
1.669		 500
3.45		 2 - M10 × 45 67
2.638		 107
4.213		 44
1.732		 UL FM
40
1-1/2		 48.3
1.900		 500
3.45		 2 - M10 × 45 72
2.835		 111
4.370		 44
1.732		 UL FM
50
2		 60.3
2.375		 500
3.45		 2 - M10 × 55 85
3.346		 125
4.921		 44
1.732		 UL FM
65
2-1/2		 73.0
2.875		 500
3.45		 2 - M10 × 55 99
3.898		 139
5.472		 45
1.772		 UL FM
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M10 × 55 102
4.016		 143
5.630		 45
1.772		 UL FM
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 60 116
4.567		 166
6.535		 45
1.772		 UL FM
100
4		 108.0
4.250		 500
3.45		 2 - M12 × 65 138
5.433		 188
7.401		 48
1.890		 UL FM
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 65 141
5.551		 191
7.520		 49
1.929		 UL FM
125
5		 133.0
5.250		 300
2.07		 2 - M12 × 75 164
6.457		 214
8.425		 48
1.890		 UL FM
125
5		 139.7
5.500		 300
2.07		 2 - M12 × 75 167
6.575		 219
8.622		 49
1.929		 UL FM
125
5		 141.3
5.563		 300
2.07		 2 - M12 × 75 167
6.575		 219
8.622		 49
1.929		 UL FM
150
6		 159.0
6.250		 300
2.07		 2 - M12 × 75 190
7.480		 242
9.528		 49
1.929		 UL FM
150
6		 165.1
6.500		 300
2.07		 2 - M12 × 75 192
7.559		 246
9.685		 50
1.969		 UL FM
150
6		 168.3
6.625		 300
2.07		 2 - M12 × 75 200
7.874		 251
9.882		 49
1.929		 UL FM
200
8		 216.3
8.504		 300
2.07		 2 - M16 × 85 250
9.843		 317
12.480		 59
2.323		 UL FM
200
8		 219.1
8.625		 300
2.07		 2 - M16 × 85 253
9.961		 320
12.598		 59
2.323		 UL FM
250
10		 273.0
10.748		 300
2.07		 2 - M22 × 130 335
13.189		 426
16.772		 68
2.677		 UL FM
300
12		 323.9
12.752		 300
2.07		 2 - M22 × 130 380
14.96		 470
18.504		 65
2.559		 UL FM
XGQT31A Angle Pad Coupling
Product Description
  • Type: Ductile cast iron angle pad rigid grooved coupling.
  • Size Range: 25 mm to 300 mm.
  • Certification Standards: UL certification and FM certification.
  • Features: Utilizes angle pad structure optimization, a high-performance rigid grooved coupling with bolt loading, offering more uniform locking force and higher connection reliability, mainly used in firefighting, HVAC, and industrial high-demand pipeline systems. Primarily addresses uniform force distribution in connections.
  • Application Locations: Mainly used in positions within firefighting water supply systems that bear relatively large mechanical loads, such as fire pump outlets, large diameter main pipes, the bottom of high-rise risers, valve connections, and areas with high anti-seismic requirements.
Angle pad coupling on white background
Technical Data
Table 10: XGQT31A
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
25
1		 33.7
1.327		 300
2.07		 2 - M10 × 45 57.4
2.260		 98
3.858		 47
1.85		 UL
32
1-1/4		 42.4
1.669		 300
2.07		 2 - M10 × 55 65
2.559		 106
4.173		 47
1.85		 UL FM
40
1-1/2		 48.3
1.900		 300
2.07		 2 - M10 × 55 70.5
2.776		 111
4.37		 47
1.85		 UL FM
50
2		 60.3
2.375		 300
2.07		 2 - M10 × 60 85
3.346		 123.5
4.862		 47
1.85		 UL FM
65
2-1/2		 73.0
2.875		 300
2.07		 2 - M10 × 60 99
3.900		 137.5
5.413		 47
1.85		 UL FM
65
2-1/2		 76.1
3.000		 300
2.07		 2 - M10 × 60 102
4.016		 141.5
5.571		 47
1.85		 UL FM
80
3		 88.9
3.500		 300
2.07		 2 - M12 × 65 117
4.606		 164.5
6.476		 47.5
1.87		 UL FM
100
4		 108
4.250		 300
2.07		 2 - M12 × 70 138.5
5.453		 186
7.323		 52
2.047		 UL FM
100
4		 114.3
4.500		 300
2.07		 2 - M12 × 70 140.5
5.531		 188
7.402		 52
2.047		 UL FM
125
5		 139.7
5.500		 300
2.07		 2 - M12 × 75 167.5
6.595		 219
8.622		 52
2.047		 UL FM
125
5		 141.3
5.563		 300
2.07		 2 - M12 × 75 167.5
6.595		 219
8.622		 52
2.047		 UL FM
150
6		 159.0
6.250		 300
2.07		 2 - M12 × 75 190
7.480		 240
9.449		 52.5
2.067		 UL FM
150
6		 165.1
6.500		 300
2.07		 2 - M12 × 75 193
7.598		 243
9.567		 52.5
2.067		 UL FM
150
6		 168.3
6.625		 300
2.07		 2 - M12 × 75 200
7.874		 249
9.803		 52.5
2.067		 UL FM
200
8		 216.3
8.516		 300
2.07		 2 - M16 × 110 251
9.882		 312
12.283		 64
2.52		 UL FM
200
8		 219.1
8.625		 300
2.07		 2 - M16 × 110 251
9.882		 320
12.598		 64
2.52		 UL FM
250
10		 267.0
10.512		 300
2.07		 2 - M22 × 155 307
12.087		 392
15.433		 66
2.60		 UL FM
250
10		 273.0
10.748		 300
2.07		 2 - M22 × 155 316
12.441		 400
15.748		 66
2.60		 UL FM
300
12		 323.9
12.752		 300
2.07		 2 - M24 × 165 376.5
14.823		 464
18.268		 66
2.60		 UL FM
XGQT32 Flexible Coupling
Product Description
  • Type: Ductile cast iron grooved flexible coupling.
  • Applicable Pipes: Specifically designed for Schedule 5, Schedule 10, Schedule 40, GB/T 3091, JIS G3452, WGalweld 5, and WGalweld 7 pipe specifications.
  • Size Range: 25 mm to 300 mm (1 inch to 12 inches).
  • Certification Standards: Rated pressure complies with UL and FM certification standards.
  • Features: Primarily optimized for thin-wall pipes of Schedule 5, Schedule 7, and Schedule 40, and has obtained FM certification and UL certification.
  • Typical Installation Locations: Sprinkler main pipe; firefighting ring pipe; riser connection; near pump room.
Flexible coupling on white background
Technical Data
Table 11: XGQT32
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
25
1		 33.7
1.327		 500
3.45		 2 - M10 × 45 58
2.283		 100
3.937		 44
1.732		 UL FM
32
1-1/4		 42.4
1.669		 500
3.45		 2 - M10 × 45 67
2.638		 107
4.213		 44
1.732		 UL FM
40
1-1/2		 48.3
1.900		 500
3.45		 2 - M10 × 45 72
2.835		 111
4.370		 44
1.732		 UL FM
50
2		 60.3
2.375		 500
3.45		 2 - M10 × 55 85
3.346		 124
4.882		 44
1.732		 UL FM
65
2-1/2		 73.0
2.875		 500
3.45		 2 - M10 × 55 99
3.898		 138
5.433		 45
1.772		 UL FM
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M10 × 55 102
4.016		 142
5.591		 45
1.772		 UL FM
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 60 116
4.567		 165
6.496		 45
1.772		 UL FM
100
4		 108.0
4.250		 500
3.45		 2 - M12 × 65 138
5.433		 187
7.362		 48
1.890		 UL FM
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 65 141
5.551		 190
7.480		 49
1.929		 UL FM
125
5		 133.0
5.250		 300
2.07		 2 - M12 × 75 164
6.457		 213
8.386		 48
1.890		 UL FM
125
5		 139.7
5.500		 300
2.07		 2 - M12 × 75 167
6.575		 218
8.583		 49
1.929		 UL FM
125
5		 141.3
5.563		 300
2.07		 2 - M12 × 75 167
6.575		 219
8.622		 49
1.929		 UL FM
150
6		 159.0
6.250		 300
2.07		 2 - M12 × 75 190
7.480		 240
9.449		 49
1.929		 UL FM
150
6		 165.1
6.500		 300
2.07		 2 - M12 × 75 192
7.559		 245
9.646		 50
1.969		 UL FM
150
6		 168.3
6.625		 300
2.07		 2 - M12 × 75 200
7.874		 250
9.843		 49
1.929		 UL FM
200
8		 216.3
8.504		 300
2.07		 2 - M16 × 85 250
9.843		 316
12.441		 59
2.323		 UL FM
200
8		 219.1
8.625		 300
2.07		 2 - M16 × 85 253
9.961		 319
12.559		 59
2.323		 UL FM
250
10		 267.4
10.512		 300
2.07		 2 - M20 × 120 307
12.087		 388
15.276		 65
2.559		 UL FM
250
10		 273.0
10.748		 300
2.07		 2 - M22 × 130 317
12.48		 401
15.787		 63
2.48		 UL FM
300
12		 318.5
12.520		 300
2.07		 2 - M22 × 130 360
14.173		 450
17.717		 65
2.559		 UL FM
300
12		 323.9
12.752		 300
2.07		 2 - M22 × 130 375
14.764		 455
17.913		 64
2.52		 UL FM
XGQT35 Quick Rigid Coupling
Product Description
  • Type: Ductile cast iron quick connect rigid coupling.
  • Size Range: 50 mm to 150 mm.
  • Certification Standard: UL certification obtained.
  • Uniqueness: A rigid grooved connector optimized for installation efficiency, featuring an ultra-fast locking structure to reduce installation time. Compared to the XGQT01, it is more suitable for large-scale firefighting projects, industrial pipelines, and projects with higher construction efficiency requirements.
  • Typical Installation Locations: Firefighting main pipe; sprinkler network; firefighting riser.
Quick rigid coupling on white background
Technical Data
Table 12: XGQT35
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
50
2		 60.3
2.375		 400
2.75		 2 - M10 × 65 85.5
3.366		 148
5.827		 54
2.126		 UL
65
2-1/2		 73.0
2.875		 400
2.75		 2 - M10 × 65 99
3.898		 160.5
6.319		 54
2.126		 UL
65
2-1/2		 76.1
3.000		 400
2.75		 2 - M10 × 65 101.5
3.996		 163.5
6.437		 54
2.126		 UL
80
3		 88.9
3.500		 400
2.75		 2 - M12 × 70 115
4.528		 184
7.244		 54
2.126		 UL
100
4		 114.3
4.500		 300
2.07		 2 - M12 × 80 140
5.512		 212
8.346		 58
2.283		 UL
125
5		 139.7
5.500		 300
2.07		 2 - M12 × 80 166
6.535		 240
9.449		 58
2.283		 UL
125
5		 141.3
5.563		 300
2.07		 2 - M12 × 80 167.5
6.594		 242
9.528		 58
2.283		 UL
150
6		 165.1
6.500		 300
2.07		 2 - M12 × 80 192
7.559		 264.5
10.413		 58
2.283		 UL
150
6		 168.3
6.625		 300
2.07		 2 - M12 × 80 195.5
7.697		 270
10.63		 58
2.283		 UL
101T Rigid Coupling
Product Description
  • Type: Ductile cast iron rigid grooved coupling.
  • Size Range: 25 mm to 150 mm.
  • Certification Standards: UL certification and FM certification.
  • Features: The core selling points of 101T are recommended to be labeled as single bolt design + fast installation + rigid connection.
  • Typical Installation Locations: Branch connection; sprinkler pipe; small diameter firefighting pipe.
Rigid coupling on white background
Technical Data
Table 13: 101T
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) Torque Value (N·M) φ (mm) L (mm) H (mm) UL FM
25
1		 33.7
1.32		 450
3.1		 M10 × 55 90±10 57.3 98.6 47.6 UL FM
32
1-1/4		 42.4
1.67		 450
3.1		 M10 × 60 90±10 64 107.5 47.5 UL FM
40
1-1/2		 48.3
1.9		 450
3.1		 M10 × 60 90±10 70 114 47.5 UL FM
50
2		 60.3
2.37		 365
2.5		 M10 × 65 90±10 84 128 48 UL FM
65
2-1/2		 73
2.87		 365
2.5		 M10 × 70 100±10 96.4 140.3 48 UL FM
65
2-1/2		 76.1
3.0		 365
2.5		 M10 × 70 100±10 99.5 143.5 48 UL FM
80
3		 88.9
3.5		 365
2.5		 M12 × 80 100±10 113.5 168 48 UL FM
100
4		 108
4.25		 365
2.5		 M12 × 80 120±10 133 187.5 50 UL FM
100
4		 114.3
4.5		 365
2.5		 M12 × 80 120±10 143 194 50 UL FM
125
5		 133
5.24		 365
2.5		 M12 × 85 150±10 165.5 221 50 UL FM
125
5		 139.7
5.5		 365
2.5		 M12 × 85 150±10 172 228 50 UL FM
125
5		 141.3
5.56		 365
2.5		 M12 × 85 150±10 173.7 229.5 50 UL FM
150
6		 159
6.26		 365
2.5		 M12 × 90 150±10 190 251 51 UL FM
150
6		 165.1
6.5		 365
2.5		 M12 × 90 150±10 198 256 51 UL FM
150
6		 168.3
6.63		 365
2.5		 M12 × 90 150±10 201 259 51 UL FM
H305 HDPE Coupling
Product Description
  • Type: HDPE pipe connection coupling.
  • Size Specifications: 50 mm to 300 mm.
  • Features: H305 is specially designed for trenchless mechanical connections of HDPE (high density polyethylene) pipes. The metal tooth structure inside the housing engages the HDPE pipe outer wall, while the rubber sealing ring ensures reliable sealing. H305 is not a grooved steel pipe coupling but a mechanical connection coupling dedicated to HDPE plastic pipes.
  • Typical Installation Locations: Underground firefighting pipe; outdoor firefighting pipeline network.
HDPE coupling on white background
Technical Data
Table 14: H305
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in)
50
2		 60.3
2.375		 300
2.07		 4 - M12 × 60 83
3.268		 120
4.724		 116
4.567
63
2.48		 300
2.07		 4 - M10 × 60 89
3.504		 116
4.567		 105
4.134
80
3		 88.9
3.5		 300
2.07		 4 - M12 × 75 114.5
4.5		 166
6.535		 118
4.647
110
4.33		 300
2.07		 4 - M12 × 75 137
5.394		 180
7.087		 110
4.331
100
4		 114.5
4.5		 300
2.07		 4 - M12 × 75 143
5.63		 201
7.913		 147
5.787
161
6.339		 300
2.07		 4 - M12 × 75 188
7.402		 235
9.252		 118
4.646
150
6		 168.3
6.626		 300
2.07		 4 - M16 × 85 202
7.953		 252
9.921		 150
5.906
200
7.874		 300
2.07		 4 - M16 × 85 238.2
9.378		 309
12.165		 127
5.00
200
8		 219.1
8.626		 300
2.07		 4 - M16 × 85 258
10.157		 320
12.598		 152
5.984
252
9.921		 300
2.07		 4 - M16 × 100 288
11.339		 350
13.780		 141
5.551
250
10		 273
10.748		 300
2.07		 4 - M20 × 100 313
12.323		 390
15.354		 165
6.496
300
12		 323.9
10.748		 300
2.07		 4 - M20 × 120 367
14.449		 455
17.913		 183
7.205
H307 Transition HDPE Coupling
Product Description
  • Type: Transition HDPE coupling.
  • Size Specifications: 50 mm to 300 mm.
  • Features: H307 is a transition-type mechanical connection coupling mainly used to achieve direct conversion connections between HDPE (high-density polyethylene) pipelines and grooved steel pipes. It solves the problem of the HDPE pipeline system being unable to connect directly with the traditional steel pipe grooved system.
  • Typical Installation Locations: Outdoor firefighting pipeline network; underground firefighting pipe. Used when connecting HDPE underground pipes with steel firefighting systems.
Transition HDPE coupling on white background
Technical Data
Table 15: H307
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in)
50
2		 60.3
2.375		 300
2.07		 4 - M12 × 60 84
3.07		 146
5.748		 78
3.071
80
3		 88.9
3.5		 300
2.07		 4 - M12 × 75 112
4.409		 174
6.85		 79
3.11
110
4.33		 300
2.07		 4 - M12 × 75 137.6
5.417		 192
7.559		 80
3.150
100
4		 114.5
4.5		 300
2.07		 4 - M12 × 75 142
5.591		 208
8.189		 95
3.74
161
6.339		 300
2.07		 4 - M12 × 75 188
7.402		 246
9.685		 85
3.346
150
6		 168.3
6.626		 300
2.07		 4 - M16 × 85 198
7.795		 280
11.024		 96
3.78
200
8		 219.1
8.626		 300
2.07		 4 - M16 × 85 260
10.236		 342
13.465		 107
4.213
250
10		 273
10.748		 300
2.07		 4 - M20 × 120 314
12.362		 424
16.693		 128
5.039
300
12		 323.9
10.748		 300
2.07		 4 - M20 × 120 368
14.488		 470
18.504		 129
5.079
KRJ02 Shouldered Coupling
Product Description
  • Type: Ductile cast iron shouldered coupling.
  • Specifications: 40 mm to 350 mm.
  • Features: KRJ02 is a shouldered mechanical connection coupling that enables pipe connection through mechanical engagement between the pipe end shoulder and the shoulder groove inside the coupling. Compared with traditional grooved couplings, it does not rely on a grooving structure but uses shoulder bearing, featuring quick installation, easy disassembly, and strong load capacity. It is mainly used in mines, industrial transport, large-diameter pipelines, and other systems requiring fast maintenance.
  • Typical Application Locations: Certain projects may use it for large-diameter firefighting pipes; temporary firefighting pipelines.
Shouldered coupling on white background
Technical Data
Table 16: KRJ02
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in)
40
1-1/2		 48.3
1.900		 500
3.45		 2 - M10 × 55 81
3.189		 117
4.606		 47
1.85
50
2		 60.3
2.375		 500
3.45		 2 - M12 × 60 97
3.957		 132
5.197		 48
1.89
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M12 × 65 108
4.252		 153
6.024		 46
1.811
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 75 125
4.921		 170
6.692		 48
1.89
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 75 157
6.181		 205
8.070		 52
2.047
125
5		 139.7
5.500		 500
3.45		 2 - M16 × 85 184
7.244		 241
9.488		 52
2.047
150
6		 165.1
6.500		 500
3.45		 2 - M16 × 85 213
8.386		 272
10.708		 52
2.047
200
8		 219.1
8.625		 500
3.45		 2 - M20 × 100 278
10.945		 345
13.583		 60
2.362
250
10		 273
10.748		 500
3.45		 2 - M22 × 130 341
13.425		 416
16.338		 64
2.52
273
10.748		 500
3.45		 2 - M24 × 130 344.5
13.563		 432
17.008		 65
2.559
300
12		 323.9
12.752		 500
3.45		 2 - M24 × 130 391.5
15.413		 484
19.055		 65
2.559
350
14		 355.6
14.000		 500
3.45		 3 - M22 × 100 428
16.85		 504
19.84		 75
2.95
XGQT02W Ring Joint Coupling
Product Description
  • Type: Ductile cast iron flexible grooved coupling.
  • Specification Size: 150 mm to 600 mm.
  • Features: XGQT02W is a specially structured flexible grooved coupling that achieves pipeline positioning and sealing connection through an annular joint structure. Compared to the ordinary XGQT02, it primarily optimizes the sealing method and connection stability, improving sealing reliability and pipeline adaptability while maintaining flexible connection capability. It is suitable for pipeline systems with high reliability requirements, such as firefighting, municipal water supply and drainage, and industrial water transportation.
  • Typical Installation Locations: Firefighting main pipe; pump room piping; outdoor firefighting ring pipe.
  • Advantages: Absorbs water hammer; reduces vibration impact.
Ring joint coupling on white background
Technical Data
Table 17: XGQT02W
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Allow Pipe End sep. H (mm) Deflection from CL Degree Deflection from CL mm / M Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) Sealing Size R (mm / in)
150
6		 165.1
6.500		 300
2.07		 0-6.4 1.2° 0.2521 4 - 3/4 × 108 202
7.953		 280
11.024		 95
3.74		 10
0.394
168.3
6.625		 300
2.07		 0-6.4 1.2° 0.2521 4 - 3/4 × 108 206
8.11		 283
11.142		 95
3.74		 10
0.394
350
14		 355.6
14.00		 300
2.07		 0-6.4 1.2° 0.2521 6 - M16 × 135 405
15.945		 490
19.291		 99
3.898		 8
0.315
400
16		 406.4
16.00		 300
2.07		 0-6.4 0.9° 0.1916 6 - M16 × 135 455
17.913		 540
21.260		 99
3.898		 8
0.315
450
18		 457.2
18.00		 300
2.07		 0-9.5 1.2° 0.2521 6 - M20 × 120 508
20.00		 605
23.819		 105
4.134		 8
0.315
500
20		 508
20.00		 300
2.07		 0-9.5 1.08° 0.2319 8 - M22 × 100 568
22.362		 678
26.693		 115
4.528		 9.5
0.374
600
24		 609.6
24.00		 300
2.07		 0-9.5 0.8° 0.1714 8 - M22 × 100 672
26.457		 782
30.787		 125
4.921		 12.7
0.50
XGQT01H Heavy Duty Rigid Coupling
Product Description
  • Type: Ductile cast iron rigid grooved coupling.
  • Specification Sizes: 50 mm to 600 mm.
  • Certification Standard: UL certification.
  • Characteristics: The XGQT01H is a strengthened rigid grooved coupling, a heavy-duty version of the XGQT01, mainly used for high pressure, large diameter, and high safety requirement pipeline systems. This product enhances the housing structure and optimizes the grooved locking capability to improve connection load capacity and long-term reliability.
  • Typical Installation Locations: Firefighting main pipe; firefighting risers in high-rise buildings; fixed pipe sections in the fire pump room.
  • Suitable: UL/FM firefighting engineering; high pressure firefighting systems.
Heavy duty rigid coupling on white background
Technical Data
Table 18: XGQT01H
Nominal Size (mm / in) Pipe O.D. (mm / in) Working Pressure (PSI / MPa) Bolt Size No.-Size (mm) φ (mm / in) L (mm / in) H (mm / in) UL FM
50
2		 60.3
2.375		 500
3.45		 2 - M10 × 55 88.6
3.488		 129.5
5.098		 46
1.811		 UL
65
2-1/2		 76.1
3.000		 500
3.45		 2 - M10 × 55 107.8
4.244		 149
5.866		 46
1.811		 UL
80
3		 88.9
3.500		 500
3.45		 2 - M12 × 75 120.8
4.756		 171
6.732		 46
1.811		 UL
100
4		 114.3
4.500		 500
3.45		 2 - M12 × 75 146
5.748		 197
7.756		 51
2.008		 UL
125
5		 139.7
5.500		 450
3.1		 2 - M16 × 100 174.8
6.882		 234
9.213		 51
2.008		 UL
150
6		 165.1
6.500		 450
3.1		 2 - M16 × 100 200.2
7.882		 260.5
10.256		 53
2.087		 UL
200
8		 216.3
8.516		 300
2.07		 2 - M20 × 120 261.4
10.291		 333
13.11		 63
2.480		 UL
250
10		 267.4
10.528		 300
2.07		 2 - M22 × 130 318.6
12.543		 395
15.551		 64
2.52		 UL
300
12		 318.5
12.539		 300
2.07		 2 - M22 × 165 371
14.606		 451
17.756		 64
2.52		 UL
350
14		 355.6
14.00		 300
2.07		 3 - M22 × 100 406
15.984		 461
18.15		 75
2.953		 UL
400
16		 406.4
16.00		 300
2.07		 3 - M22 × 100 458.6
18.055		 513.8
20.228		 75
2.953		 UL
450
18		 457.2
18.00		 250
1.72		 3 - M22 × 100 515
20.276		 571
22.48		 82
3.228		 UL
500
20		 508
20.00		 250
1.72		 4 - M24 × 130 565
22.244		 690
27.165		 79
3.11		 UL
600
24		 609.6
24.00		 250
1.72		 4 - M24 × 130 676
26.614		 786.6
30.969		 79
3.11		 UL
Accessories
Coupling casting on white background

Casting

Made of high-quality ductile iron with strict control of chemical composition and mechanical properties.
Coupling bolts and nuts on white background

Bolts and Nuts

Manufactured from 35K or 10B21 steel, with mechanical properties meeting Grade 8.8 requirements.
Coupling rubber gasket on white background

Rubber Gasket

Available in EPDM, NBR, and Silicone materials to meet the requirements of different operating conditions.
Application
Rooftop fire protection piping

Automatic Sprinkler System

Outdoor fire hydrant

Fire Hydrant Systems

Fire pump room piping and equipment

Fire Pump Room

Fire water supply system

Fire Water Supply System

Dry pipe fire sprinkler system section

Dry System

Pre-action fire sprinkler system section

Pre-action System

Foam fire protection system

Foam System

Outdoor fire monitor piping and equipment

Fire Monitor

Hot Selling Products

Carefully selected fire protection products to meet the needs of engineering projects.

Fire steel pipe on white background

Fire Steel Pipe
Let's talk about how we can help your business.
Customer Support

WhatsApp & WeChat: +86-15631809529

E-mail: [email protected]

Products
Resources
Fire Protection System
Industries
Case Studies
About
Copyright © 2001 - 2026 Pyroval Fire Protection Technology Co., Ltd.
Leave a Message
Chat Offline - Leave A Message
Please leave us a message and we will get back to you shortly.
×