This paper presents a new type material for making air valvecage-alloy cast iron countaining Cr. Ni.
本文介绍一种制做内燃饥气阀座的新材质——铬镍铜合金铸铁。
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The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.