BS EN 1393-1997 塑料管道系统.玻璃增强热固性塑料(GRP)管.初始轴向拉伸特性的测定

标准号：BS EN 1393-1997
中文标准名称：塑料管道系统.玻璃增强热固性塑料(GRP)管.初始轴向拉伸特性的测定
英文标准名称：Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of initial longitudinal tensile properties
标准类型：G33
发布日期：1997/4/15 12:00:00
实施日期：1997/4/15 12:00:00
中国标准分类号：G33
国际标准分类号：23.040.20
适用范围：This standard specifies three test methods for determining the longitudinal tensile properties of pipes of glass-reinforced thermosetting plastics (GRP). The properties which can be determined are: - the longitudinal tensile strength; - the percentage ultimate elongation; - the longitudinal modulus of elasticity. Method A uses for the test piece(s) a longitudinal strip cut from a pipe. Method B uses a specified length of the full cross-section of the pipe. Method C uses a notched plate cut from a pipe wall section. Method A is applicable to pipes with a nominal size DN 50 or greater with circumferentially wound filaments, with or without chopped glass and/or woven rovings and/or fillers, and to centrifugally cast pipes. It is applicable to those pipes with helically wound filaments with a nominal size DN 200 or greater. Method B is applicable to all types of GRP pipes. It is usually used for pipes with a nominal size up to DN300. Method C is primarily intended for use for helically wound pipes with a winding angle other than approximately 90°. This method may also be used for other types of pipe. Results from one method are not necessarily equal to the results derived from any of the alternative methods. However, all methods have equal validity.