Steel-Plastic Coated Rubber Ring Joint Reducer Coupler for Water

Key Features

• Steel-plastic composite structure: external metal reinforcement for ultra-high strength.
• Double socket reducing: both ends are rubber ring sockets of different diameters.
• Concentric reduction: aligned centerlines with tapered flow transition.
• 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 grooves machined in both sockets; smooth reducing transition.

Critical Process Parameters

• Bonding strength between metal reinforcement and PVC layer.
• Rubber ring groove accuracy on both sockets.
• Streamlined reducing section design.

Raw Material Characteristics

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

Typical Applications

• Straight connections at diameter change points in large-diameter water pipes.
• Size transition between main and branch pipelines.

Application Scenarios

• Reducing straight connections for large-diameter water supply pipes.