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API rock bits for granite with 8 1/2 IADC 537
Introduction about us:
We are Hejian Chuanda Petroleum Drilling Equipment Co., Ltd Drilling Supplies Marketing Dept. specializes in drill bits, drill pipe, Mud pump and stablizers for water well, oil field, construction, geothermal, directional boring, and underground foundation work all over the world. Our purpose is to sell the best quality products at the lowest possible price.
The principle of our company is based on the quality of survival. With advanced technology and scientific management, our company develops with reputations for providing quality products and best service.
Specifications about our products:
Model | |
IADC CODE | 116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347 |
417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536 535 | |
available sizes: | From 3 3/4'' to 26” larger sizes for hole opener bit ,reamer bit |
advantage | favourable price and good qualtity |
bearing type: | sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA (rubber sealed journal bearing) |
Formation or layer | soft ,medium soft ,hard,medium hard,very hard formation |
Application | petroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work |
Main feature:
1.Cutting Structure
The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
2.Gauge Structure
Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.
3.Bearing Structure
High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.
4.Seal and Lubrication
The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal are relatively dynamic, and the energizers are static. This will improve the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
Advantages of our products:
1)Fast drilling rate
2)Strong cutting structure durability
3)be used for water well, oil field, underground, construction, geothermal, directional boring
4)Be used to drill low compressive strength,soft formation
5)various of model and dimension avaliable
6)rubber seal or metal seal
7)high quality and competitive price
8)including drill rods,drill collar,rerun steel tooth bits, ,used drill bits stock,used mud pumps,etc
