Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
管道摩擦力是指由管道引起的流动阻力，作为一个常用原则，最好是使用最大的实用的管道尺寸以避免在水泵性能方面的损失。
This paper deals with the relationship between friction resistance on the pipe wall and the pumpability of concrete mixtures, and also studies the equipment for friction resistance measuring.
本文介绍混凝土对管壁的摩阻力与可泵性之间的关系，摩阻力测定装置。
A horizontal smoke pipe adopts a spring suspender and a central roller support, and the friction resistance generated by the thermal expansion the pipe when moving is reduced.
水平烟管采用弹簧吊、中心滚动支座，可减少管道热膨胀移动时的摩擦阻力；
A horizontal smoke pipe adopts a spring suspender and a central roller support, and the friction resistance generated by the thermal expansion the pipe when moving is reduced.
水平烟管采用弹簧吊、中心滚动支座，可减少管道热膨胀移动时的摩擦阻力；
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