... DIN ST37.2,ASTM A182-F304 F304L 3)ANSI B16.5,BA105,DIN ST37.2, ASTM A182- F304 F304L, ... : from 1/2" to 80" (DN15 to DN2000)5)Special designavailable as the requirements of customer6)Standard: ANSI B16 ... .5, B16.47, MSS, SP-44, AWWA, API, DIN, JIS, HG, GB, JG, BS.7)All the flanges are ... according to the ASTM, BS, DIN, JIS, EN, GB and customer's request. blind stainless flanges