... Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS STAINLESS STEEL REDUCER TypeButt welded pipe fittingsSizeSeamless 1/2" To 24" Welded ... ,DIN, JIS, BS, ISO, GB, SH, AND HG etc MaterialStainless Steel: ASTM A403 WP304, 304L, 310, 316, 316L, 321, 347, ... WPL 1, WPL 3, WPL 6Surface treatmentBlack painting,anti-rust varnish,anti-rust oil,hot galvanized,3PE coating, epoxy coating.Packingwooden case ...