1 an open structure that gives shape and support to something, such as the transverse stiffening ribs of a ship's hull or an aircraft's fuselage or the skeletal beams and uprights of a building. 2 an enclosing case or border into which something is fitted.
Metal; Ferrous Metal; Austenitic; Cast Iron. Material Notes: Type CRS is an austenitic material with graphite in the nodular form. It conforms to ASTM designation A439-60T and provides much higher strength than type CR with excellent resistance to corrosion, wear and heat.
Subsequent stations form the bottom twocorners (3) of the shape. No cold working of the sides of the shape isperformed, and the shapeâs seam is welded by high-frequency contactswhen the tube is near its ï¬nal shape and size. The welded tube (4) iscooled and then driven through a series of sizing stations which qualiï¬esthe tubeâs ï¬nal dimensions. HSS Manufacturing Methods The transformation of steel strip into hollow structural sections (HSS) is the result of operations including forming, welding and sizing.