... B16.5, B16.47, MSS, SP-44, AWWA, API, DIN, JIS, HG, GB, JG, BS.8)All the flanges are according to the ... ASTM, BS, DIN, JIS, EN, GB and customer's request.Ding Xiang county Wan Tong Pressure ... standards, i.e. ANSI ,API ,MSS ,AWWA , DIN ,JIS ,BS as well as GB ,which size 1/2"(DN15) to 80"(DN2000),And we ...