... Carbon Steel Forged HDPE Flange:1.Type:Alloy flange2.Material:Alloy steel3.Certification:ISO9001:2008,TUV 2010, PED20 MainMaterialStainless steel,Carbon steel ... ~9125-88 GB/T13402-92GOSTGOST 12820-80 12821-80SpecificationClass150#,300#,400#,600#,900#,1500 ... 5,PN4.0,PN6.3,PN10.0,PN16.0Mpa,PN2.0,PN5.0,PN11. ... or as per customers requirement.Face typeFF, RF, LJ, RTJ, TG,T,GCertificateISO9001:2000, ...