... , API, JIS, JPI, DIN, UNI, BS, hydraulic equipment professional weld square flange Forged Flanges to Standard ANSI /API / AWWA / DIN / BS ... special requirementsForged Flanges:Dimension Standard: ANSI B16.5 1/2-24 CLASS 150-2500ANSI B16.47 26-60 CLASS 75-900API ...