of the size of the finished pipe. As the plate is pipe. The grooves are filled with rope packing, and ferent sizes of tubing turned out of the pipe mills and pushed out of the furnace it is seized by a pair of heavy after it has been lifted into place the face plates are listed on the books of the… … a gas-fired weld- cludes two large machine shops, a pipe coupling forge, 4.-LAP-WELDING ROLLS AND MANDREL. a flange welding shop, a foundry and many depart- ing furnace, Fig. 1, by means of a ments of lesser importance. All of the furnaces are steam " pusher." The pusher is controlled by the man…
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