Welded pipe joint

Details Welded pipe joint Welded pipe joint

1989-11-28

1992-04-14

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 55, 285286, F16L 1112

Patent

active

051041529

ABSTRACT:
A welded pipe joint for pipes which are internally lined for carrying corrosive fluids is formed by an internally lined insert extending into the belled end sections of the pipes to be joined and engaging the belled end sections with a mechanical interference fit. The insert, which is provided with a heat shield to retard the transfer of heat during a subsequent welding operation, is held in coaxial alignment with the pipes while the adjacent ends of the pipes are brought together. The adjacent ends of the pipes are finally welded to complete the joint.

REFERENCES:
patent: 2764426 (1956-09-01), Von Ahrens
patent: 3508766 (1970-04-01), Kessler et al.
patent: 3516689 (1970-06-01), Binford et al.
patent: 3794358 (1974-02-01), Allen et al.
patent: 4120083 (1978-10-01), Echols

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