Hardware merchandising January-June 1897 . bing a plantat McKeesport, Pa., gives the following onthe process of making lap welded pipe. Thebillet or pile (as the case may be) is heatedand passed through a train of rolls, turningout in the shape of a strip. This strip is thenbevelled on the edges (called scarfing) andafter being heated to a dull red heat is drawnthrough a die, coming out in the shape ofskelp. The skelp is then pushed into a weld-ing furnace and after being subjected to awelding heat is passed over a mandrel heldon a long bar and through a pair of weld-ing rolls which presses do
Hardware merchandising January-June 1897 . bing a plantat McKeesport, Pa., gives the following onthe process of making lap welded pipe. Thebillet or pile (as the case may be) is heatedand passed through a train of rolls, turningout in the shape of a strip. This strip is thenbevelled on the edges (called scarfing) andafter being heated to a dull red heat is drawnthrough a die, coming out in the shape ofskelp. The skelp is then pushed into a weld-ing furnace and after being subjected to awelding heat is passed over a mandrel heldon a long bar and through a pair of weld-ing rolls which presses down the lap andforms the mass of metal into an even cylin-drical form. This is pipe in its rough state. The rough pipe is then passed throughsizing rolls, then through cross straighteningrolls, then rolled on to a movable table,when it is subjected to a cold air blast whileit rolls. It is then straightened in dies con-trolled by hydraulic power. The roughends are then cut off, the threads are cut,a coupling is screwed on, and a careful in-. The wheel can be placed in any position,either in show window or salesroom. Whenthe wheel is exhibited to a customer it canbe placed to the best advantage, and leaves spection follows. The pipe is then placedin the pumps and tested to hydrostatic pres-sure, after which the protecting rings arescrewed on, the pipe again inspected and isthen ready for shipment. HARDWARE AND METAL H. S. HOWLAND, SONS & CO WHOLESALEHARDWARE 37 West Front St., TORONTO. Ice Cream Freezers WHITE MOUNTAIN TRIPLEACTION BEST IN THE WORLD.
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Keywords: ., bookcentury1800, booksubjectbu, booksubjectimplementsutensilsetc
