... steel, Stainless steel and Alloy steel etc.4), Standard: ANSI, DIN, GOST, BS, JIS and customers' drawings for special use5), Types ... ,600,900,150031/2”—64”DIN2573, 2572, 2631, 2576, 2632,2633, 2543, 2544, etcplate, slip-on, welding neck, blind, threaded etc ...