1.Size:1/2"-4" 2.Standard:ANSI,DIN,JIS,EN, GB (ASME B 16.9 ) 3.Material: Carbon steel, Stainless steel, Alloy steel Size:1/2"-4"Standard:ANSI,DIN,JIS,EN, GB (ASME B 16.9 )Materials: Carbon Steel : ASTM A234 WPB/A 420 WPL3/A420 WPL6/MSS-75 WPHY 42/46/52/56/60. Stainless Steel: ASTM A403 WP 304/304 L, 316/316L,321, 321H, 310S, 317L,347H Alloy Steel : ASTM A234 WP1/WP5/WP9/WP11/WP22/WP91 Thickness: ...