BS EN 744-1996 塑料管道和导管系统.热塑管.抗日夜外部连续冲击应力的试验方法

标准号：BS EN 744-1996
中文标准名称：塑料管道和导管系统.热塑管.抗日夜外部连续冲击应力的试验方法
英文标准名称：Plastics piping and ducting systems - Thermoplastics pipes - Test method for resistance to external blows by the round-the-clock method
标准类型：G31
发布日期：1996/2/15 12:00:00
实施日期：1996/2/15 12:00:00
中国标准分类号：G31
国际标准分类号：23.040.20
适用范围：This standard specifies a method for determining the resistance to external blows of thermoplastics pipes with circular cross sections by using the round-the-clock method. The method is intended to be applied to isolated batches of pipe. For type testing and audit testing, 0 ℃ and/or -20 ℃ are applicable. NOTE. Pipes made from polypropylene homopolymer (PP-H) which principally can not conform to impact requirements at 0 ℃ or lower temperatures are permitted to be tested at (23 ±2) ℃ under the condition that PP-H pipes are intended for use for soil and waste discharge and bear an additional marking indicating that they are not to be installed below +5 ℃.