<*n>大直径基桩钻头应用于建筑、桥梁建造、告诉公路建设、铁路建设领域。*n>
此系列钻头适用于各种不同复杂地层,如页岩、石灰岩、鹅卵岩、白云岩、砾岩等。
产品优点是可以根据钻井要求定做钻头尺寸,从而满足异型号尺寸孔径的要求。
IADC CODE (可供型号) |
116, 117, 126, 127, 136, 137, 216, 217, 226, 236, 316, 317, 326, 327, 336, 337, 115, 125, 135, 215, 225, 235, 315, 325, 335, 114, 124, 214, 314, 111, 121, 131,346, 347, |
417, 427, 437, 517, 527, 537, 617, 627, 637, 737, 837, 415, 425, 435, 445, 525, 625, 635, 416, 446, 447, 516, 526, 537, 547, 516, 536, 535. |
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Available Sizes (可供尺寸) |
3’’ 3 3/8’’ 3 1/2’’ 3 7/8’’ 4 1/2’’ 4 5/8’’ 4 3/4’’ 5 1/4’’ 5 1/2’’ 5 5/8’’ 5 3/4’’ 5 7/8’’ 6’’ 6 1/4’’ 6 1/2’’ 6 3/4’’ 7 1/2’’ 7 5/8’’ 7 7/8’’ 8 1/2’’ 8 3/4’’ 9 1/2’’ 9 5/8’’ 9 7/8’’ 10 5/8’’ 11 5/8’’ 12 1/4’’ 13 5/8’’ 14 3/4’’ 15 1/2’’ 16’’ 17 1/2’’ 20’’ 22’’ 24’’ 26’’ |
Advantage (优势) |
Most&nb*ttractive price&nb*nd quality |
Bearing (轴承类型) |
Sealed bearing&nb*nd N*ealed bearing (密封轴承与非密封轴承) HJ(metal sealed journal bearing) (金属密封轴承) HA(ru*er sealed journal bearing) (橡胶密封轴承) |
Formation (适用地层) |
Soft, medium soft, hard, medium hard, very hard (软,中软,硬,中硬,坚硬) |
Button sizes (extra features) (齿形) |
<*n>Button bit, saw teeth*n>(齿的形状) 1)Y-conical teeth(锥形齿) 2)X-chisel teeth(楔形齿) 3)K-spherical teeth (球形齿) 4)G-gauge protection(保径) |