The cast iron pipe is used for water supply, drainage and gas transmission pipeline.
铸铁管用于给水、排水和煤气输送管线，它包括铸铁直管和管件。
And municipal water supply and drainage pipe is erected on the ground, if there are problems, will give the city the normal production and life bring serious effect.
且市政给排水工程的管网架设在地下，一旦出现问题，会给城市正常的生产和生活带来严重的影响。
The paper discusses the hot topics such as building water supply, building water drainage, building fire protection and pipe materials.
本文列举了建筑给水、 建筑排水、 建筑消防和管材的部分热点问题。
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