... ,LR,GL, GOST certified leading maunfacture .Duplex stainless steel pipe we are an ISO9001:2000, ... ,KR,LR,GL, GOST certified leading maunfacture .Duplex stainless steel pipeStandards:ASTM A312,ASTM A213,ASTM A269 ... 904,S31803,S31500,S32750 Outside Diametre:6mm - 700mm (stainless steel seamless pipe) Wall Thickness: 0.9mm - ... and sorry for disturb . Duplex stainless steel pipe Duplex stainless steel pipe