ISO 4433-4-1997 热塑性塑料管 耐液体化学药品 分类 第4部分:聚偏氟乙烯(PVDF)管材

标准号：ISO 4433-4-1997
中文标准名称：热塑性塑料管 耐液体化学药品 分类 第4部分:聚偏氟乙烯(PVDF)管材
英文标准名称：Thermoplastics pipes - Resistance to liquid chemicals - Classification - Part 4: Poly(vinylidene fluoride) (PVDF) pipes
标准类型：G33
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 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：The method of classification given in this part of ISO 4433 serves to determine the chemical resistance of poly(vinylidene fluoride) PVDF pipes designed for the conveyance of liquids in the absence of pressure and stress (e.g. due to earth loads or traffic loads, dynamic or internal stresses). To determine the chemical resistance, the method uses the change in mass and the changes in tensile properties which result from the immersion of test pieces, taken from such pipes, in liquid chemicals. The immersion test is carried out in accordance with ISO 4433-1. This part of ISO 4433 is also applicable to PVDF sheets as appropriate.