Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test method to prove the structural design of fittings (ISO 18851:2015, IDT)
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SS-ISO 18851:2020
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test method to prove the structural design of fittings (ISO 18851:2015, IDT)
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This International Standard specifies methods of test for fittings of any form, i.e. bends, branches,
tapers, intended to be used in plastics piping systems for pressure and non-pressure drainage and
sewerage or water supply made of glass-reinforced thermosetting plastics (GRP). This International
Standard is applicable to fittings, in order to test their structural design, but is not applicable to
connecting joint systems. It assumes that the fitting either is or is not intended to be subject to the
effects of hydrostatic end thrust.
The tests detailed in 8.1 to 8.4 are applicable to fittings intended to be used in buried or non-buried
applications.
These test procedures are applicable to fittings of all nominal sizes specified in the referring standard.
The tests are for evaluating fittings intended for use in applications conveying liquids at temperatures
specified in the referring standards.
The test procedures in this International Standard are damaging to the test piece which will not be
suitable for reuse after these tests. The test procedure is applicable to type testing.
NOTE This International Standard is not intended to be used for the assessment of the performance of nonintegrated
joints as there are already international test methods for this purpose. See Bibliography.
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test method to prove the structural design of fittings (ISO 18851:2015, IDT)
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