Method and device for welding pipes and a pipe-layer

Details Method and device for welding pipes and a pipe-layer Method and device for welding pipes and a pipe-layer

1991-01-10

1992-12-15

Shaw, Clifford C.

Electric heating

Metal heating

Of cylinders

21912511, B23K 912

Patent

active

051719541

ABSTRACT:
In a method for welding together pipe ends of pipes held mutually in line the welding process is automatically controlled subject to the angular distance traversed by the welding lance.

REFERENCES:
patent: 3555239 (1971-01-01), Kerth
patent: 4144992 (1979-03-01), Omae et al.
patent: 4145593 (1979-03-01), Merrick et al.
patent: 4283617 (1981-08-01), Merrick et al.
patent: 4559430 (1985-12-01), Hayakawa
patent: 4645902 (1987-02-01), Hawakawa
patent: 4883938 (1989-11-01), Sarugaku

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