... , size from DN15 to DN1500Material: Monel, Duplex S.S, Al-alloy, Inconel, 904L, Q235A, 20#, 16Mn,12Cr2Mo, 15Cr5Mo, Cr5Mo, 12Cr1MoV, 0Cr18Ni9 ... steel flange 1)TUV and ISO 9001certificate 2)ANSI /DIN /EN 1092/UN/BS4504 3over 10 years experiencestandard forged carbon steel ... flange1)TUV and ISO 9001certificate2)ANSI B 16.5/DIN /EN 1092/UN/BS45043)DN15-DN36004)Carbon /forged steel/stainless steel ...