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Metalsin’s straight concrete pipe repair clamp is a high-performance solution engineered specifically for sealing leaks in straight sections of large-diameter concrete pipelines. These critical infrastructure pipes are typically manufactured to international standards such as ASTM C14/C76/C118, EN 1916, and GB/T 11836. Given that municipal water and sewage mains are designed for continuous, long-term operation, our clamps provide a vital “live” repair method. This “wrap-around” technology allows for immediate containment of the leak while the system remains under pressure, eliminating the need for expensive shutdowns or the complex replacement of heavy concrete segments.

The ductile iron straight concrete pipe repair clamp and the illustration of its use in leak repair.
The assembly of the straight concrete pipe repair clamp consists of a robust two-piece ductile iron body, precision-contoured rubber gaskets, high-tensile fasteners, and an integrated malleable iron vent plug for air discharge during installation. By fully encapsulating the damaged area, this repair clamp applies uniform radial pressure to create a permanent, leak-proof seal. Metalsin’s design prioritizes durability and ease of installation in the field, making it an essential tool for maintaining the structural integrity of large-scale concrete piping networks with minimal operational disruption.

Case Study: The application of a DN1000 x 2000mm (L) straight concrete pipe repair clamp, which is used for emergency leak repair on a DN1000 municipal water supply main pipeline, ensuring uninterrupted water supply to urban residents.
| 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 | H.D.G Malleable Iron |

Technical drawing of the straight concrete pipe repair clamp.
| Model No. | N.P.S mm | L mm |
|---|---|---|
| Z100-1 | 150 | 300 |
| Z100-2 | 150 | 500 |
| Z100-3 | 150 | 1000 |
| Z150-1 | 200 | 300 |
| Z150-2 | 200 | 500 |
| Z150-3 | 200 | 1000 |
| Z200-1 | 260 | 300 |
| Z200-2 | 260 | 500 |
| Z200-3 | 260 | 1000 |
| Z250-1 | 320 | 300 |
| Z250-2 | 320 | 500 |
| Z250-3 | 320 | 1000 |
| Z300-1 | 380 | 300 |
| Z300-2 | 380 | 500 |
| Z300-3 | 380 | 1000 |
| Z400-1 | 490 | 300 |
| Z400-2 | 490 | 500 |
| Z400-3 | 490 | 1000 |
| Z500-1 | 610 | 500 |
| Z500-2 | 610 | 1000 |
| Z600-1 | 720 | 500 |
| Z600-2 | 720 | 1000 |
| Z800-1 | 960 | 500 |
| Z800-2 | 960 | 1000 |
| 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 |