... 2,professional UT 3,all kind of types Forged Flange ring Specification 1,Standard: ASTM, BS,ASME, DIN, SIS , ... DIN/BS/JIS 10-4000mm PN2.5-404,Type: Flat, Slip on, Blind, Welding Neck, Threaded, Lapped, Orifice, Figure ... and ISO180002,we can manufacture all kind of forged flange ring as per customer's requirement.3, inspection: factory in ... 7, Professional engineers 8, Prompt Delivery forged flange ring