随着国民经济的发展,在排流和自来水工程上需要大量的铸铁管。目前我国在铸铁管生产上大量采用连续拉管工艺, 由于其设备和工艺较为简单,所以生产铸铁管的厂家大多是乡镇企业。在铸铁管生产中,结晶器的消耗量 With the development of the national economy, a large amount of cast iron pipes are needed in drainage and tap water projects. At present, China’s continuous production of cast iron pipe using a large number of pipe pulling process, due to its equipment and technology is relatively simple, so the production of cast iron pipe manufacturers are mostly township enterprises. In the production of cast iron pipes, mold consumption