Design Specifications
Milling shoes according to its structure is divided into flat type, concave bottom type, pear type, conical, pilot type, milling type. The grinding surface welding the granule wear- resisting material or inlaid with hard alloy column, used to grind, such as bolts, nuts, cone, slip teeth, deep well pump accessories and down hole fallings and trim the fish.
公称外径 D（mm） | 接头螺纹 Connect | 适用井眼直径（mm） Well diameter |
89 | NC26、2-3/8REG | 95.2 ～ 101.6 |
97 | 107.9 ～ 114.3 |
110 |
NC31 2-7/8REG 3-1/2REG | 117.5 ～ 127.0 |
121 | 130.0 ～ 139.7 |
130 | 142.9 ～ 152.4 |
140 |
NC38 3-1/2REG 4-1/2REG | 155.6 ～ 165.1 |
156 | 168.0 ～ 187.3 |
178 | 190.5 ～ 209.5 |
200 | NC50 4-1/2REG | 212.7 ～ 241.3 |
232 | 244.5 ～ 269.9 |
257 |
6-5/8REG | 273.0 ～ 295.3 |
279 | 298.5 ～ 317.5 |
295 | 320.6 ～ 346.1 |
330 | 349.3 ～ 406.4 |
381 | 406.4 ～ 444.5 |
406 |
7-5/8REG | 431.8 ～ 508 |
432 | 457.2 ～ 533.4 |
534 | 558.8 ～ 650 |
686 | 711.2 ～ 863.6 |
In China
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