a bending furnace it, and the edge of the pipe beaded over to keep the a special machine, which cuts off the desired length of and rolled up into pipe form with the scarfed edges flange in place in the furnace. When the work has bar iron and forms it up on a mandrel with wonderful overlapping. The… … reached.a welding heat the raised to a_ welding heat, skelp is pushed through the slipped onto a cylindrical door at the hack of the furnace into the welding rolls, mandrel, and welded under a quick-acting steam ham- cave anvil, which is stepped to receive both ‘pipe and flange. The pipe is turned…
Internet Archive · Public domain (published before 1931). Free to use for anything.
