讨论了排水管材的隔音原理；
公司前身为城北铸造厂，生产销售铸铁类给水、排水管材管件及铸铁件。
The company formerly known as North foundry, production and sales of cast iron-type water supply, drainage pipe fittings and cast iron pieces.
公司引进具有国际领先水平的给、排水管材管件及电工套管生产、检测设备和技术。
The company has introduced international advanced level of the drainage pipe casing pipe fittings and electrical production, testing equipment and technology.
本公司下属：鲁南矿山洗选机械研究所、洗煤机械厂、20万吨洗煤厂两座、塑料给排水管材厂、油性水性涂料厂。
The Company subordinate: Lunan Institute of Mining washing machine, coal washing machine factory, 200,000 tons coal washery two, plastic drainage pipe to the plant, oily water-based paint factory.
介绍上海市政排水管道常用的承插式、企口式和钢承口式柔性接口混凝土及钢筋混凝土排水管，及其这些排水管材的生产工艺。
This article describes the concrete and reinforced concrete drain pipes with spigot and socket, rebated socket or steel-collar socket flexible joints, and the process for their fabrication.
这种管材与传统实壁排水管相比，不仅能有效地降低排水噪声，而且在排水排通能力方面也大为提高，是一种节能环保型建筑排水管材。
In comparison with traditional solid wall drain pipe, this kind of pipe is an energy-saving environmental protection type drain pipe for building.
随着全国各个地区不断开发引进了各种新型的给排水管材，具有不同种类和性能的管道管材，在使用中能够在使用中发挥重要的作用和价值。
With the continuous development of a variety of new drainage pipes in all regions of country, different types and properties pipes play an important role in the use and value.
对排水管道在满管流状态下的运行特性进行分析，并介绍了在满管流状态下管材的选择以及管道安装注意事项。
The working features of the drainage pipe under full pipe flow state was analyzed, the selection of pipe materials under full pipe flow state and the precautions for pipe installation were introduced.
通过对住宅卫生间排水管线的几种方案阐述和比较，对其优点和不足之处进行了说明，并对管材作了分。
Based on the comparisons among several cases of drainage pipeline design for toilet of dwelling houses, their advantages and disadvantages are introduced, and the materials of pipes are analyzed.
管材采用了具有消声功能的螺旋UPVC排水管，地下室内泵房地面及车库均设有集水坑和废水提升装置。
Pipe with a silencer function by a spiral UPVC pipes, basement floors and garage are equipped with pumping station sump and waste water lifting devices.
PE系列塑料管材生产线主要用于生产农用给排水管、建筑给排水管、线缆等产品。
PE series plastic pipe production line is mainly used for producing pipe of water supply and drainage in the field of agriculture and construction, cable etc.
PE系列塑料管材生产线主要用于生产农用给排水管、建筑给排水管、线缆等产品。
PE series plastic pipe production line is mainly used for producing pipe of water supply and drainage in the field of agriculture and construction, cable etc.
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