According to different casting methods, divided into continuous cast iron pipe and the centrifugal cast iron pipe, wherein the centrifugal cast iron pipe is divided into two types of sand and metal.
按铸造方法不同，分为连续铸铁管和离心铸铁管，其中离心铸铁管又分为砂型和金属型两种。
One of keys of production of centrifugal casting pipe of s. g. iron is continuous and fast delivery of qualified base iron with proper chemical composition and temperature.
应用离心铸造工艺生产球墨铸铁管，连续快速提供化学成分和温度均合格的优质铁液是生产的关键环节之一。
The three most commonly used method of manufacturing FRP are Cross-winding process, continuous winding process and the centrifugal casting process.
国际上现有三种制造夹砂压力管的工艺方法。它们分别是，交叉缠绕工艺、连续缠绕工艺和离心浇铸工艺。
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