... WPC Carbon steel reducer/ seamless buttweld pipe fitting/concentric reducer/eccentric reducer Type: butt welded and seamless pipe fittingCertificate:ISO9001:2000surface treatment ... SCH5S-SCH160, XS,XXS,STDStandard: ASME,ANSI,DIN,JIS,ASTM,UNI,BS,API,and so on.Material: Carbon steel ... ,stainless steel,alloy steelCARBON STEEL :ASTM A234 WPB, WPC; ASTM A420 WPL9, WPL3, WPL6, WPHY-42,WPHY ...