Heavy Repairs for Big Transmission Mains
The Large Diameter Pipe Repair Clamp handles pipes DN400 and larger. These big mains carry water to entire cities or industrial zones. A leak on a large main is a major event. Repair is difficult and risky. Our clamp is designed for these heavy-duty jobs. It has the strength and sealing power for big pipes.
The housing walls are extra thick. The housing has rib reinforcements for rigidity. The bolt count increases with pipe size. More bolts provide the clamping force needed for large diameters. The gasket is wider and thicker for more sealing area. Installation often needs lifting equipment. We recommend using torque wrenches for even bolt tightening. This ensures the clamp fits evenly around the whole pipe circumference.
We have large CNC machines for machining big parts. We can make products up to DN800 in-house. We have a dedicated large-diameter technical team. They provide site measurement, design support, and installation guidance. We have worked with many provincial water groups on large main projects. We have rich experience in this field.
Saved a City from Water Crisis
A northern city had a DN600 raw water main burst under a highway. This pipe supplied 40% of the city's water. A shutdown was unthinkable. The water group used our Large Diameter Pipe Repair Clamp and requested our technical support. Our team traveled overnight to the site. We guided the installation under pressure. The repair worked. The city kept its water supply. This case was reported in local media. It became a benchmark for large-diameter pressure repairs.
We offer a 10-year warranty with two spare gasket sets. For DN800 and above, we custom design and manufacture each product. The delivery time is typically 30 to 45 days.
Technical Parameters
|
Parameter |
Specification |
|
Diameter Range |
DN400 – DN800 (larger sizes on request) |
|
Working Pressure |
≤1.6 MPa |
|
Housing Material |
QT450 ductile iron (rib-reinforced, thick walls) |
|
Sealing Material |
EPDM rubber (wide and thick) |
|
Bolt Grade |
8.8 high-strength steel (oversized, more bolts) |
|
Surface Treatment |
Epoxy powder coating |
|
Application |
Large transmission mains, raw water lines |
|
Warranty |
10 years (with two spare gasket sets) |
Hot Tags: large diameter pipe repair clamp, China large diameter pipe repair clamp manufacturers, suppliers, factory