Powder filled tube and a method for the continuous manufacture o

Details Powder filled tube and a method for the continuous manufacture o Powder filled tube and a method for the continuous manufacture o

1987-02-04

1988-04-19

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 93G, 420590, C21C 700, C22C 100

Patent

active

047387149

ABSTRACT:
A powder filled tube has a steel outer wall which consists of two layers formed as two complete turns of a spiral made from a single strip and welded together at their interface to form a unitary wall. The method for the continuous manufacture of this tube involves

REFERENCES:
patent: 2014983 (1935-09-01), Quarnstrom
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patent: 3543381 (1970-12-01), Martin
patent: 4126446 (1978-11-01), Knorre
patent: 4174962 (1979-11-01), Frantzreb
patent: 4200456 (1980-04-01), Fujii
patent: 4297133 (1981-10-01), Fujii
patent: 4364770 (1982-12-01), Douchy
patent: 4486227 (1984-12-01), Douchy

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