... ,shipbuilding,constructio,etc. ISO 9001CERTIFICATE. BUTT WELDED FITTING: Production acc. to the standard of GB /ASTM / ASME / DIN / JISASTM B 16 ... ,WP304, WP304L, Wp316, WP316L, A234WPB,Dimensions: Seamless: from 1/2' up to 24' Welded: From 1/2' up to 72' Packaging: Wooden Cases painted black or ...