Relevant models of flanges and their corresponding material standards

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Flange model: The products include flat welding flanges, butt welding flanges, concave and convex flanges, neck flanges and flange covers. National standard, ordinary flange, galvanized threaded flange, butterfly valve flange, slotted flange, pipe pile end plate, cast and forged flange flange material: Stainless steel flange (304304l316316l) alloy steel flange carbon steel flange No. 20 steel q234q345 and other flange standards: National standard flange, American standard flange, British standard flange and various non-standard flanges, high pressure flange stamping flange. Ministry of Electric Power standards GD0506~0507 corresponding standards for flanges and tube sheets supporting pressure vessels: JB/T4700~4707-2000 execution * * Standards (GB/T9112-2000), Ministry of Mechanical Engineering standards (JB81-59, JB/T74-94), Ministry of Petrochemical Industry standards (SH3406-96), Ministry of Chemical Industry standards (HG5010-58, HG20592-97), etc. The material of export forged steel flanges complies with the American ASTM.A105 standard.