B2.4:2023 SPECIFICATION FOR WELDING PROCEDURE AND PERFORMANCE QUALIFICATION FOR THERMOPLASTICS
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This specification provides the requirements for qualification of welding procedure specifications and welders for manual,
semiautomatic, mechanized, and automatic welding. The welding processes included are electrofusion, hot gas,
socket fusion, butt contact fusion, infrared, extrusion welding, flow fusion welding, and solvent cement welding. Base
materials, filler materials, qualification variables, and testing requirements are also included.