Schwarkzkopf, Ernst · New York : J. Wiley & Sons ; London : Chapman and Hall · leaf 202
ADVANCED FORGING 185 bar even with the end of the pipe, so that no time may be wasted in placing the pin properly after the welding heat has been applied. Remove the pin from the pipe and heat it to a red heat to avoid chilling the thin walls of the pipes too rapidly. Then slip the pin again into… … Fic. 146.—Welding Pipe. and placed in the bottom swage. Bring both pieces in close contact, slip the pin quickly through, the chalk mark even with the end of the pipe. While one man is forcing the pipes together by hammering from the end, as illustrated, thus upsetting the pipe, the other man…
Forging
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
