DIN EN ISO 15876-3-2017 冷热水装置用塑料管道设备.聚丁烯(PB).第3部分:配件(ISO 15876-3-2017);德文和英文版本EN ISO 15876-3-2017
Plastics piping systems for hot and cold water installations - Polybutene (PB) - Part 3: Fittings (ISO 15876-3:2017); German and English version EN ISO 15876-3:2017