What is ISO 8639 - Leak-tightness of GRP pipes and fittings about?
ISO 8639 is the international standard on glass-reinforced thermosetting plastics piping for pressure applications that is a highly durable material, ideally suited for a wide range of applications in various industries where very long lifetime expectancy is required.
ISO 8639 specifies test methods for flexible non-thrust resistant socket-and-spigot joints with elastomeric sealing elements for buried and above ground glass-reinforced thermosetting plastics (GRP) pipeline applications.
ISO 8639 is applicable to joints for either pressure or non-pressure applications.
These test procedures are applicable to joints for pipes and fittings of all nominal sizes. The tests are suitable for the evaluation of joints intended for applications in which the liquids are conveyed at temperatures specified in the referring standards.
The test procedures in ISO 8639 are damaging to the test piece which will not be suitable for reuse after these tests. The test procedure shall be applied for type testing purposes.
Note 1: ISO 8639 covers methods of test for the leak-tightness and resistance to damage of the joint only, when subject to specified combinations of longitudinal extension (draw), angular movement (angular deflection), compression (deformation) perpendicular to the pipe axis and internal pressure.
Note 2: The joints tested in accordance with ISO 8639 are subjected to conditions that measure their ability to function and thereby prove the design of the joint, especially for type test purposes.
Who is ISO 8639 - Leak-tightness of GRP pipes and fittings for ?
ISO 8639
Open preview (PDF)Glass-reinforced thermosetting plastics (GRP) pipes and fittings. Test methods for leaktightness and proof of structural design of flexible joints