ÖNORM EN 1450

This standard specifies methods of test for joints with bolted flanges for plastics piping systems of glass-reinforced thermosetting plastics (GRP) for buried and above ground pipelines. This standard is only applicable to the joint and Covers methods of test to prove its design. This test procedure is applicable to joints for pipes and fittings of all nominal sizes. The tests detailed in 6.1 to 6.6 inclusive are applicable to bolted flange joints intended to be used in buried or above-ground applications. NOTE 1: The only intention of testing the resistance to negative pressure is to give adequate safety against infiltration of pollutants through the joint into the fluid carried in the piping system. Under these test conditions pipes with low stiffnesses may require Support to prevent them from buckling. NOTE 2: The test methods are dependent upon having a declared value for the bolt torque to be used for assembling the joints appropriate to, for example, the design of the joint, the relevant nominal pressure and the temperature of test. The results are only valid for the type of flanged joint tested. All tests given in this standard are applicable fox evaluating joints intended for applications conveying liquids at temperatures up to 50 "C and may be applicable to joints for use at higher temperatures (see clause 2).