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Joint Lock Rings

Welded Joints for Lined Pipe

Joint Lock Ring

Ring Manufacturing: Carbon steel rings machined to pipe ID, molded high temperature and abrasion resistant rubber chemically bonded and mechanically anchored to carbon steel rings
Ring Insertion: Rings protrude slightly from pipe ends to create weld gap and backing ring
Field Welding: Root pass welds rings to pipe wall and the heat resistant rubber is unaffected by welding heat
Benefits: Full penetration welds hold same pressure as pipe wall; smooth surface for insulation, easy field length adjustments, less expensive than flanged joints.
Suitable Lined Pipes : Rubber, polyurethane and cement mortar

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