定义了热塑性塑料焊接的资格要求。包括手工、半自动、机械化和自动焊接的焊接工艺规范、焊工和焊接操作员的资格要求。包括电熔合、热气、插座熔合、对接接触熔合、红外、挤压焊接和流动熔合焊接工艺，以及母材、填充材料、鉴定变量和测试要求。

Defines qualification requirements for welding of thermoplastics. Includes requirements for qualification of Welding Procedure Specifications, welders, and welding operators for manual, semi-automatic, mechanized, and automatic welding.Covers electrofusion, hot gas, socket fusion, butt contact fusion, infrared, extrusion welding, and flow fusion welding processes, as well as base materials, filler materials, qualification variables, and testing requirements.