They are usually made of high-grade cast alloy iron to improve wear characteristics of the cylinder.

曲轴箱缸体是汽车中最大、·最复杂的金属件，一般由优质合金铸铁制成，以增强其耐磨性。

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In order to meet the growing wealth of heating radiators market, the company has also developed steel radiator and fine sand without high-grade cast iron decoration cast iron radiators and radiator.

为适应日益丰富的采暖散热器市场，公司还开发了钢制散热器及无砂精品铸铁散热器和高档装潢铸铁散热器。

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