美利体育登录入口官网:UNE-EN ISO 2507-2:2018 热塑性塑料管材和管件 维卡软化温度 第2部分:未增塑聚乙烯的测试条件
Thermoplastics pipes and fittings - Vicat softening temperature - Part 2: Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyl chloride) (PVC-C) pipes and fittings and for high impact resistance poly (vinyl chloride)...