ISO 8483:2003 specifies methods of test for bolted flange joints for plastics piping systems made of glass-reinforced thermosetting plastics (GRP). This standard is only applicable to the joint, and covers methods of test to prove its design. It assumes that the joint either is or is not intended to be subject to the effects of hydrostatic end thrust.
These test procedures are applicable to joints between pipes and fittings of all nominal sizes. The tests are applicable for evaluating joints intended for applications conveying liquids at temperatures specified in the referring specifications.