美利体育登录入口官网:LST EN 1120-2002 塑料管道系统 玻璃增强热固性塑料(GRP)管道和配件 偏转条件下截面内部耐化学侵蚀能力的测定
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Determination of the resistance to chemical attack from the inside of a section in a deflected condition