关于发展我省离心铸造管件产品的建议程海明，张贞一离心铸管是在铸管生产过程中，使一定温度的铁水球化，从而改变铁水的金相结构，然后通过离心机拉出铸管。铸管主要用于城市供水、下水、供气以及输油管道。传统的铸管是采用手工砂型的生产工艺，规模小、效益低、质量差... Suggestions on Developing Centrifugal Casting Pipe Fittings in Our Province CHENG Haiming, ZHANG Zhenyi Centrifugal cast pipe is to change the hot metal structure of molten iron at a certain temperature in the process of cast pipe production, then the cast iron pipe is withdrawn through the centrifuge . Casting pipe is mainly used for urban water supply, water supply, gas supply and oil pipelines. The traditional cast pipe is handmade sand production process, small size, low efficiency, poor quality ...