... 2000,QS-9000 4)standard:DIN,ASME,JPI,ANSI,BS,UNI,etc Socket weld KF flange1)size:1/2" - 48"2 ... :ISO9001:2000,QS-90004)standard:DIN,ASME,JPI,ANSI,BS,etc 5)Coatings:Resist-rust oil,transparent or as ... CertificateISO 9001:2000 , QS-2000StandardJIS, DIN, ASME, JPI, ANSI, BS, GB, ISO,EN,etcThicknessSCH20, SCH30, American Standard, STD, SCH80, ... .Assure you our best services all the time. Socket weld Flange