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Metalsin’s butt-fusion-welding joint repair clamp for HDPE pipes is a specialized solution engineered for the emergency repair of leaks occurring at fused joints in water supply and wastewater systems. Butt-fusion welding is a premier connection method that melts pipe ends to create a joint as strong as the pipe itself, making it the standard for high-pressure and large-diameter HDPE applications. When a leak occurs at these critical fused beads, this repair clamp provides an essential “wrap-around” repair that restores joint integrity without compromising the pipeline’s overall performance.

Illustration: the use of butt-fusion-welding joint repair clamp on an HDPE pipe.
Designed for maximum operational efficiency, this ductile iron repair clamp enables rapid, in-service repairs while the system remains under pressure. This eliminates the costly necessity of shutting down the entire line or performing complex pipe replacements. Metalsin’s BFW joint repair clamp is precision-engineered to fit securely over the weld area, providing a permanent, leak-proof seal that ensures the long-term reliability of your HDPE infrastructure even in demanding environments.
| 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 |

The technical drawing of ductile iron BFW joint repair clamp for HDPE pipes.
| Nominal Pipe O.D. mm | D mm | L mm |
|---|---|---|
| 50 | 69 | 70 |
| 63 | 82 | 70 |
| 75 | 92 | 70 |
| 90 | 107 | 70 |
| 110 | 127 | 70 |
| 125 | 142 | 80 |
| 160 | 176 | 80 |
| 200 | 219 | 100 |
| 225 | 248 | 100 |
| 250 | 269 | 100 |
| 315 | 335 | 100 |
| 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 |