... Size:1/2"-60" or DN15-DN1500 Pressure:150-2500LB or PN16-PN250 or 10K-40K ... ,F11,F22,F51,F304,F316, Sealing surface typeNominal Pressure PN/MPabar0.252.50.661.0101.61.62.5254 ... needed.2)We blind flange Small torque of operate3)Flow curve tending to straight the test of tens of ... blind flange by perfect sealing without leakage under the pressure test6)We blind flange wide selection of materials,applicable ...