Method for manufacturing a pipeline having an internal protectiv

Details Method for manufacturing a pipeline having an internal protectiv Method for manufacturing a pipeline having an internal protectiv

1977-03-01

1979-01-02

Kelly, Donald G.

Metal fusion bonding

Process

With shaping

228172, 228176, 228263, B23K 508

Patent

active

041323432

ABSTRACT:
A pipeline consisting of lengths of steel pipe welded together in end-to-end relation is made by first weld-plating the internal surface of the end portions of each individual pipe length with a corrosion-resistant material. A protective layer is then applied to the internal surface of each pipe length between the weld-plated end portions, the latter having first been smoothed down by machining to the desired finished thickness of the protective layer. The pipe lengths are then welded together in end-to-end relation. The welding operation consists of first depositing a root bead encircling the pipe at the junction of the ends of the weld-plated material. Weld material is then deposited in and fills out the gap between bevelled edges of the pipe ends to substantially the outside diameter of the pipe.

REFERENCES:
patent: 2412271 (1946-12-01), Kercher
patent: 2943387 (1960-07-01), Dawson
patent: 3135047 (1964-06-01), Houser
patent: 3289293 (1966-12-01), Stenquist
patent: 3325191 (1967-06-01), Yates
patent: 3541670 (1970-11-01), McCrory

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