
Water main and water distribution systems — PVC-U 6,3 plastic pipes and fittings with elastic joints and with nominal diameter until DN 100 Part 5: Requirements for fittings
出版:Brazilian Standards

專家解讀視頻
Water main and water distribution systems — PVC-U 6,3 plastic pipes and fittings with elastic joints and with nominal diameter until DN 100 Part 5: Requirements for fittings
出版:Brazilian Standards
專家解讀視頻