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公锥是一种专门从油管，钻杆、套铣管、封隔器、配水器、配产器等有孔落物的内孔进行造扣和打捞的工具。这种工具对于带接箍的管类落物打捞成功率较高。公锥与正、反扣钻杆及其他工具配合使用，可实现不同的打捞工艺。
he taper tap is a special tool cutting thread and fishing internally in dropped objects such as tubing, drill-pipe,wash-over pipe, packer, water flow allocator, down-hole produc-tion allocator. The tool is especially a great success in catch of objects accompanied with couplings.The taper tap can effect different fishing operations when equipped with RH thread or LH thread drill pipes and other tools.
技术规格及参数
| 型号 |
接头螺纹 |
内径(mm) |
落鱼直径(mm) |
| GZ86-1 |
NC26 |
16 |
39～67 |
| GZ86-2 |
NC26 |
20 |
54～77 |
| GZ95-1 |
NC26 |
25 |
68～89 |
| GZ105-1 |
NC31 |
20 |
54～77 |
| GZ105-2 |
NC31 |
25 |
72～90 |
| GZ105-3 |
NC31 |
15 |
43～87 |
| GZ105-4 |
NC31 |
25 |
76～100 |
| GZ105-5 |
NC31 |
8 |
30～76 |
| GZ121 |
NC38 |
16 |
45～67 |
| GZ121 |
NC38 |
20 |
55～89 |
| GZ121 |
NC38 |
20 |
88～103 |
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