另一种弯管没有塞子，也更常见，这样S形弯管就得卸掉。

The second type of trap does not have a plug and is more common. The S-shaped pipe, the trap, must be removed.

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从分析单根薄壁管弯制工艺措施在薄壁管排成排弯上的应用的可行性入手，讨论了水冷壁薄壁管排的无梳形弯模下的成排弯工艺方法。

From aspect of applicability of single thin-wall tube bending measures in tube panel bending, panel bending procedure using cylinder bending die for water wall is discussed.

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从焊缝处的发现的晶粒内存在的大量多边形化的亚晶的现象推断出出现问题的工艺段，通过改进，消除了弯管成型开裂的情况。

We found the place where the processing set-up was wrong by analysing the phenomenon and solved the cracking problem through the improvement.

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