... .Certification:ISO9001:2008,TUV 2010, PED20 Carbon Steel Forged HDPE Flange:1.Type:Alloy flange2.Material:Alloy steel3.Certification:ISO9001:2008, ... TUV 2010, PED20 MainMaterialStainless steel,Carbon steel,Alloy steelWN/BL/PL ... ,PN1.6,PN2.5,PN4.0,PN6.3,PN10.0,PN16.0Mpa,PN2.0,PN5.0,PN11.0,PN15.0,PN26 ...