... 2" to 72" Thickness:sch5-sch160,XS,XXS Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS STAINLESS STEEL REDUCER TypeButt welded ... To 24" Welded To 72"Wall thicknessSch5S-Sch160, XS,XXSStandardsANSI, ASTM,DIN, JIS, BS, ISO, GB, SH, AND HG etc MaterialStainless Steel ... : ASTM A403 WP304, 304L, 310, 316, 316L, 321, 347, 904LCarbon Steel: ASTM A234 ...