ISO 8521:2020
玻璃钢热固性塑料（GRP）管.测定初始周向拉伸壁强度的试验方法
Glass-reinforced thermosetting plastic (GRP) pipes — Test methods for the determination of the initial circumferential tensile wall strength
ISO 8521:2020 发布历史
ISO 8521:2020由国际标准化组织 IX-ISO 发布于 2020-07-09。
ISO 8521:2020在国际标准分类中归属于: 23.040.20 塑料管。
ISO 8521:2020 玻璃钢热固性塑料（GRP）管.测定初始周向拉伸壁强度的试验方法的最新版本是哪一版？
最新版本是 ISO 8521:2020 。
ISO 8521:2020的历代版本如下：
- 2020年 ISO 8521:2020 玻璃钢热固性塑料（GRP）管.测定初始周向拉伸壁强度的试验方法
- 2009年 ISO 8521:2009 塑料管道系统.玻璃增强热固塑料(GRP)管路.测定表面内周抗拉强度的试验方法
- 1998年 ISO 8521:1998 塑料管道系统 玻璃纤维增强热固性塑料(GRP)管材 表面内周拉伸强度的测定
This document specifies six test methods for the determination of the initial circumferential tensile wall strength per unit of length of glass-reinforced thermosetting plastics (GRP) pipes. NOTE Another commonly used term for “circumferential tensile strength” is “hoop tensile strength” and the two expressions can be used interchangeably. The burst test (method A) is suitable for all types and sizes of pipes. It is considered the reference method. However, all the methods in this document have equal validity. If correlation of any of the methods B to F can be established by a comparative test programme, then that method can be considered as the reference method. The split disc test (method B) is not always suitable for pipes with helically wound reinforcing layers. The strip test (method C), the modified strip test (method D) and the restrained strip test (method E) are suitable for pipes with a nominal size of DN 500 and greater. The notched plate test (method F) is primarily intended for use with helically wound pipes of nominal size greater than DN 500 with a winding angle other than approximately 90°. Results from one method are not necessarily equal to the results derived from any of the alternative methods. If required, the initial circumferential tensile modulus can be determined by method A.
采用 ISO 8521 的发行版本有：
- KS M ISO 8521-2019 塑料管道系统 - 玻璃增强热固性塑料（GRP）管道 - 测定表观初始周向拉伸强度的测试方法
- KS M ISO 8521-2022 玻璃增强热固性塑料（GRP）管.初始周向拉伸壁强度测定的试验方法
- KS M ISO 8521:2004 塑料管道系统.玻璃增强热固塑料(GRP)管:表面内周拉伸强度的测定
- KS M ISO 8521:2019 塑料管道系统 - 玻璃增强热固性塑料（GRP）管道 - 测定表观初始周向拉伸强度的测试方法
- KS M ISO 8521:2022 玻璃增强热固性塑料（GRP）管.初始周向拉伸壁强度测定的试验方法
