Steel-Plastic Coated Rubber Ring Joint Flange for Water

Key Features

• Steel-plastic composite structure: external metal reinforcement for ultra-high strength.
• Rubber ring + flange: rubber ring socket/spigot on one end, plain flange on the other.
• Flexible connection: enables transition between rubber ring piping and flanged equipment.
• Large diameter capability: maximum diameter up to 1200mm.

Manufacturing Process

Internal UPVC layer formed by injection molding or welding; external metal reinforcement coating. Rubber ring groove machined in socket end; flat flange face with bolt holes per standards.

Critical Process Parameters

• Bonding strength between metal reinforcement and PVC layer.
• Socket rubber ring groove dimensional accuracy.
• Flange face flatness and bolt hole accuracy.

Raw Material Characteristics

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

Typical Applications

• Connection between large-diameter rubber ring piping and flanged valves.
• Flanged transition connections at pump station inlets/outlets.

Application Scenarios

• Transition connections between large-diameter rubber ring piping and flanged equipment.