FORGED flange 1.standard:ANSI /API / AWWA / DIN / BS / JIS 2.150LB 300LB 600LB 900LB 150 3.SLIP-ON ... customer6)Certificates: the TUV CERT ,ISO9001 - 2000, WO , PED.7)Standard: ANSI B16.5, B16.47, MSS, SP-44, AWWA, API ... , DIN, JIS, HG, GB, JG, BS.8)All the flanges are according to the ASTM ... 7 standards, i.e. ANSI ,API ,MSS ,AWWA , DIN ,JIS ,BS as well as GB ,which size 1/2"(DN15) to ...