Steel-Plastic Coated Rubber Ring Joint Coupler for Water

Key Features

• Steel-plastic composite structure: external metal reinforcement for ultra-high strength.
• Double socket design: both ends are rubber ring sockets for easy installation.
• Large diameter capability: maximum diameter up to 1200mm.
• Straight connection: high-strength joining of two pipes of the same diameter.

Manufacturing Process

Internal UPVC layer formed by injection molding or welding; external metal reinforcement coating. Rubber ring grooves machined in both socket ends; center stop ring included.

Critical Process Parameters

• Bonding strength between metal reinforcement and PVC layer.
• Rubber ring groove accuracy on both sockets.
• Coaxiality control of both sockets.
• Anti-corrosion treatment quality of metal layer.

Raw Material Characteristics

• Inner layer: UPVC
• Outer layer: Steel or ductile iron
• Sealing rings: EPDM

Typical Applications

• Straight extension connections of large-diameter municipal water mains.
• Connection of high-pressure industrial water supply pipes.
• Splicing of long-distance water transmission pipelines.

Application Scenarios

• Straight extension connections for large-diameter water supply pipes.