本标准列出并描述了热塑性塑料中热气、热气挤压、加热工具对接熔合、套筒熔合、电熔合和流动熔合焊接接头中的缺陷和缺陷。其目的是在考虑分级质量要求的情况下，使一般有效的评估成为可能。本标准包括焊缝的分类、要求、测试、评估和验收。描述了记录工程数据的细节。表中列出了热塑性焊接中的裂纹、空洞、固体夹杂物、未熔合、缺陷和形状缺陷，以及其他缺陷和缺陷。 带有说明和插图的缺陷和缺陷特征汇编成表格，以帮助评估焊缝。

This standard lists and describes flaws and defects in hot gas, hot gas extrusion, heated tool butt fusion, socket fusion, electrofusion, and flow fusion welded joints in thermoplastics. Its intent is to make possible a generally valid evaluation giving consideration to graded quality requirements. This standard encompasses the classification, requirements, testing, evaluation, and acceptance of the welds. Details in recording engineering data are described. Tables illustrating cracks, voids, solid inclusions, lack of fusion, flaws and defects of shape, and other flaws and defects in thermoplastic welds are included. Flaw and defect features with descriptions and illustrations are compiled into tables to aid in the evaluation of welds.