1 Scope
This Technical Specification provides guidance for the minimum content of welding procedure specifications for the following welding processes:
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— hot gas welding: round nozzle, high speed nozzle, wedge;
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— extrusion welding;
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— heated tool welding: butt, socket, wedge;
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— solvent welding: socket;
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— electrofusion welding: socket, saddle.
This Technical Specification applies to the welding of the following products and semi-finished products made of thermoplastic materials:
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— sheet;
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— pipe;
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— fittings;
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— lining membrane.