| Descriptors |
Tensile stress, Quality control, Design calculations, Pipes, Environmental testing, Specimen preparation, Dimensional measurement, Pressure testing, Coils, Polyethylene, Gas pipes, Internal pressure, Thickness, Dimensional changes, Density, Pressure pipes, Dimensions, Elongation at fracture, Pressure, Ratings, Form tolerances, Testing conditions, Plastics, Grades (quality), Tensile testing, Thermoplastic polymers, Size, Diameter, Test specimens, Hydrostatic pressure, Colour, Chemical-resistance tests, Test pressure, Gaseous fuels, Thermal testing, Butt joints, Marking, Oxidation resistance, Type testing, Classification systems
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