... " 2.material:Alloy steel,stainless steel,carton steel 3.standard:ANSI,ISO,JIS,DIN,BS,GB,SH,HG,QOST,ETC. Production name45D/90D ... ,304H,316,316L,317,317L,321,310,347StandardsANSI,ISO,JIS,DIN,BS,GB,SH,HG,QOST,ETC.CertificationISO9001:2000,API,BV,SGS ...