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Metalsin’s ductile iron socket joint repair clamp for plastic piping is an essential solution for the rapid maintenance of HDPE, PVC, uPVC, and PPR systems used in water supply and wastewater management. Since these plastic pipelines are commonly connected using socket-and-spigot joints, leaks at the connection points can be difficult to fix without cutting the pipe. Our specialized clamp provides a “wrap-around” repair method that fully encapsulates the leaking joint, enabling emergency repairs to be completed while the pipeline remains under pressure, thereby effectively minimizing downtime and service interruptions.

Illustration: the use of D.I. socket joint repair clamp in plastic piping.
Constructed for long-term reliability, the repair clamp consists of a high-strength, two-piece ductile iron body and high-performance rubber gaskets that ensure a permanent, leak-proof seal through radial compression. The assembly features an integrated malleable iron vent plug for air and pressure discharge during installation, along with robust fasteners. To prevent corrosion and ensure suitability for potable water, each unit is protected by fusion-bonded or liquid epoxy coating in red or blue color.
| Component | Material Grade |
|---|---|
| Body | EN-GJS-450-10 QT450-10 ASTM A536 65-45-12 |
| Sealing Gaskets | ASTM D2000 & ISO 4633 EPDM/NBR |
| Bolts | Carbon Steel Gr. 8.8 ASTM A193 Gr.B8 |
| Nuts | Carbon Steel Gr. 8 ASTM A194 Gr.8 |
| Vent Plug | Malleable Iron (H.D.G) |

Product photo & technical drawing of socket joint repair clamp for plastic piping.
| DN mm | D mm | L mm |
|---|---|---|
| 20 | 42 | 120 |
| 25 | 48 | 130 |
| 32 | 60 | 150 |
| 40 | 70 | 160 |
| 50 | 90 | 210 |
| 63 | 100 | 235 |
| 75 | 112 | 255 |
| 90 | 130 | 285 |
| 110 | 152 | 285 |
| 125 | 169 | 330 |
| 140 | 200 | 315 |
| 160 | 210 | 338 |
| 180 | 240 | 360 |
| 200 | 260 | 366 |
| 225 | 287 | 386 |
| 250 | 320 | 406 |
| 280 | 361 | 421 |
| 315 | 402 | 440 |
| 355 | 451 | 462 |
| 400 | 502 | 498 |
| 450 | 570 | 544 |
| 500 | 630 | 594 |
| 560 | 690 | 650 |
| 630 | 770 | 704 |
| 710 | 864 | 704 |
| 800 | 972 | 720 |
| Ductile Iron Repair Clamp | ||
|---|---|---|
| For D.I. Pipes | Bell Joint Repair | Tight Space Repair |
| Double-Socket Collar Repair | Straight Pipe Repair | |
| For Plastic Pipes | Socket Joint Repair | Compact Joint Repair |
| Double Socket Coupling | Straight Pipe Repair | |
| Axially Restrained Repair | BFW Joint Repair | |
| Tee Joint Repair | Reducer Joint Repair | |
| 90° Elbow Repair | 45° Elbow Repair | |
| For Steel Pipes | Flange Joint Repair | Coupling Joint Repair |
| Union Joint Repair | Tee Joint Repair | |
| Elbow Joint Repair | Straight Pipe Repair | |
| Grooved Joint Repair | Gas Joint Repair | |
| For Concrete Pipes | Bell Joint Repair | Straight Pipe Repair |