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大口径铸铁管用于各个城市输水、输气干线,是城市建设必不可缺的材料,这种管子主要由我公司铸管厂生产,而铸管厂是伪满遗留下的老厂,生产设备庞大复
Large-caliber cast iron pipe is used for water supply and gas transmission lines in various cities. It is an indispensable material for urban construction. The pipe is mainly produced by our company’s pipe casting factory. The pipe factory is an old plant left by the puppet house. The production equipment Complex