... 煤气管gas pipe 铸铁给水管cast iron pipe for water 压缩空气管compressed air pipe ...
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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。
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Graphite cast iron pipes and steel pipes are used for the water supply and distribution pipe network.
输配水管网采用了球墨铸铁管和钢管。
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