... 3.Certification:ISO9001:2008,TUV 2010, PED20 Carbon Steel Forged HDPE Flange:1.Type:Alloy flange2.Material:Alloy steel3.Certification:ISO9001 ... ,UNI2254 ,UNI2544UNI2276-2278,UNI6084,UNI6089-6093,UNI2281-2284,ASAS2129 TABLE D TABLE H TABLE EEN1092TYPE01,TYPE02,TYPE05, TYPE11,TYPE12,TYPE13GBGB9112~9125-88 GB ... . Forging 5. Heat Treatment 6.Cutting7. Inspection Carbon Steel Forged HDPE Flange