
BS EN 1852-1. Plastics piping systems for non-pressure underground drainage and sewerage. Polypropylene (PP). Part 1. Specifications for pipes, fittings and the system
出版:British Standards Institution

专家解读视频
BS EN 1852-1. Plastics piping systems for non-pressure underground drainage and sewerage. Polypropylene (PP). Part 1. Specifications for pipes, fittings and the system
出版:British Standards Institution
专家解读视频