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一、管表面摩擦力管表面磨擦力在很大程度上是可以控制的。首先要注意管子表面光洁,磨擦值就低。其次更应注意管子圆度,直径要一样大。管子在生产中可能发生问题,由于操作方法多种
First, the surface friction surface of the tube friction can be controlled to a large extent. The first thing to notice is that the surface of the tube is smooth and the friction value is low. Second, it should pay more attention to the roundness of the pipe and the diameter should be the same. Pipes may have problems in production due to various methods of operation