The bent pipe makes the flow field of impeller inlet strongly disordered.

与无弯管相比，弯管造成叶轮进口的流场紊乱。

Further analysis indicated that external copper pollution was the major cause of the crack in the bent pipe.

进一步分析，认为外来铜污染是引起弯管开裂的主要原因。

The cold-bent pipes with different diameters must be equipped with the pipe-bending dies matching with them.

不同管径的冷弯管需配置与之匹配的弯管模具。

Set saddles in interval of 1m. Use saddles at two places at 90 bent pipe curve and more than three places at 180 bent pipe curve.

设置固定托架的间隔为1m以下，90度弯曲部位和180度弯曲部位要各使用2个和3个以上的托架。

The ratchet type bent pipe wrench with repositioning rotation function is applied for fast tyre assembling and disassembling operation.

本发明令弯管扳手具有复位转动功效，以达到更快速的轮胎锁、卸作业。