
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

專家解讀視頻
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
專家解讀視頻