... steel 2,professional UT 3,all kind of types Forged Flange ring Specification 1,Standard: ASTM, BS,ASME, DIN, SIS ... Welding Neck, Threaded, Lapped, Orifice, Figure 8 Blind, Swivel and etc, we can produce as per buyer's special ... and ISO180002,we can manufacture all kind of forged flange ring as per customer's requirement.3, inspection: factory ... (alloy steel,carbon steel ,stainess steel)forged flange ring