... ,eg 5.Certificate:API,ISO,CE,eg ANSI SW Forged Flange size1/2" to 24" ASME B16.526"to 80" ASME ... , RTJ, SRF,PressureClass 150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME ... , machinery, electric power, shipbuilding, papermaking, construction, etc ANSI SW Forged Flange