First, welding began to replace riveting in ship-and plane-building (TIME. Dec. 15). Now cast steel is replacing forged steel, and in tanks it is replacing both riveted and welded armor plate.

Centrifugal Casting Assuming an Increasingly Prominent Position in the Metal Industry, this Process Offers Advantages of Economy in Metal and Machining Cost. While its Forte is in the Pipe and Tubing ...