快卸护丝

快卸护丝是在套管运输和使用过程中用来保护管柱螺纹的一种简便工具，通过方便的操作锁紧手柄就可以锁紧和松开护丝，达到保护螺纹的目的。

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Model	Applicable Diameter of tubular(in)	Model	Applicable Diameter of tubular(in)
2 3/8	2 3/8 tubing	7 5/8	7 5/8 casing
2 7/8	2 7/8 tubing	8 5/8	8 5/8 casing
3 1/2	3 1/2 tubing	9 5/8	9 5/8 casing
4 1/2	4 1/2 casing	10 3/4	10 3/4 casing
5	5 casing	13 3/8	13 3/8 casing
5 1/2	5 1/2 casing	16	16 casing
6 5/8	6 5/8 casing	18 5/8	18 5/8casing
7	7 casing	20	20 casing