
ISO 21307. Plastics pipes and fittings. Butt fusion jointing procedures for polyethylene (PE) pipes and fittings used in the construction of gas and water distribution systems
出版:British Standards Institution

专家解读视频
ISO 21307. Plastics pipes and fittings. Butt fusion jointing procedures for polyethylene (PE) pipes and fittings used in the construction of gas and water distribution systems
出版:British Standards Institution
专家解读视频