铸铁管是人民生活和工农业生产建设不可缺少的重要金属管材。我国目前生产的主要还是质量差、原材料消耗高的普通灰口铸铁管。为推动我国铸铁管行业的科学技术进步,促进铸铁管的生产发展,中 Cast iron pipe is the people’s lives and industrial and agricultural production and construction of an important metal pipe. At present, China’s production is still mainly poor quality, high consumption of raw materials ordinary gray cast iron pipe. In order to promote the progress of science and technology of cast iron pipe industry in our country and promote the production and development of cast iron pipe,