標準號：BS ISO 4433-2-1998
中文標準名稱：熱塑塑料管.耐液體化學藥品的性能.分類.聚烯烴管
英文標準名稱：Thermoplastics pipes - Resistance to liquid chemicals - Classification - Polyolefin pipes
標準類型：G31
發布日期：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 polyolefin 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 polyolefin sheets as appropriate.