標準號：BS ISO 4433-3-1998
中文標準名稱：熱塑性塑料管.耐液體化學(xué)制品.分類.第3部分:未增塑聚氯乙烯(PVC-U),高沖擊強度聚氯乙烯(PVC-HI)和氯化聚氯乙烯(PVC-C)管
英文標準名稱：Thermoplastic pipes - Resistance to liquid chemicals - Classification - Unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI) and chlorinated poly(vinyl chloride) (PVC-C) pipes
標準類型：G31
發(fā)布日期：1998/3/15 12:00:00
實施日期：1998/3/15 12:00:00
中國標準分類號：G31
國際標準分類號：23.040.20
適用范圍：The method of classification given in this part of ISO 4433 serves to determine the chemical resistance of unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI) and chlorinated poly(vinyl chloride) (PVC-C) 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 PVC-U sheets as appropriate.