» Pipes & Fittings » D.I. Socket Joint Repair Clamps for Plastic Piping

D.I. Socket Joint Repair Clamps for Plastic Piping

December 26, 2025

Product Overview

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.

use of socket joint repair clamp for pp.

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.

ComponentMaterial Grade
BodyEN-GJS-450-10
QT450-10
ASTM A536 65-45-12
Sealing GasketsASTM D2000 & ISO 4633
EPDM/NBR
BoltsCarbon Steel Gr. 8.8
ASTM A193 Gr.B8
NutsCarbon Steel Gr. 8
ASTM A194 Gr.8
Vent PlugMalleable Iron (H.D.G)
*Components & material grades.

Drawing, Sizes & Dimensions

drawing & picture of socket joint repair clamp for pp.

Product photo & technical drawing of socket joint repair clamp for plastic piping.

DN
mm
D
mm
L
mm
2042120
2548130
3260150
4070160
5090210
63100235
75112255
90130285
110152285
125169330
140200315
160210338
180240360
200260366
225287386
250320406
280361421
315402440
355451462
400502498
450570544
500630594
560690650
630770704
710864704
800972720
*Nominal pipe sizes (DN), clamp diameter (D), and length (L) of the socket joint repair clamp for plastic piping.

Ductile Iron Repair Clamp
For D.I. PipesBell Joint RepairTight Space Repair
Double-Socket Collar RepairStraight Pipe Repair
For Plastic PipesSocket Joint RepairCompact Joint Repair
Double Socket CouplingStraight Pipe Repair
Axially Restrained RepairBFW Joint Repair
Tee Joint RepairReducer Joint Repair
90° Elbow Repair45° Elbow Repair
For Steel PipesFlange Joint RepairCoupling Joint Repair
Union Joint RepairTee Joint Repair
Elbow Joint RepairStraight Pipe Repair
Grooved Joint RepairGas Joint Repair
For Concrete PipesBell Joint RepairStraight Pipe Repair
*Click to view ductile iron repair clamps for various piping conditions.

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    Tel: +86-311-89642206
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    Email:  sales@pipingpipeline.com
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