
BS EN 295-1. Vitrified clay pipe systems for drains and sewers. Part 1. Requirements for pipes, fittings and joints
出版:British Standards Institution

專家解讀視頻
BS EN 295-1. Vitrified clay pipe systems for drains and sewers. Part 1. Requirements for pipes, fittings and joints
出版:British Standards Institution
專家解讀視頻