Interlocking Kelly Bar

Interlocking pressure Kelly bar contains 3 or 6 external keys with 3 sets or more concave pressure parts. The internal key contains 3 or 6 wear-resistant strips. This type Kelly bar adopts high-strength seamless alloy steel tube and wear-resistant alloy strip. This type Kelly bar has the advantage of transfer pressure easily and better anti-torque capacity. It’s suitable for both soft and hard layer, like dense sand and gravel or weak to strong rock.

Friction type drill Kelly bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition.The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the  rotary passing down the pressure force can produce the friction force. It is simple operation, drilling depth . it is suitable for soft soil layer and mud sand layer.The complete set of Kelly bar is with light weight, high strength, high linearity of the single drill pipe.; The inner and outer layer collocate reasonably , with good wear resistance plate.. it is greatly to meet the special requirement of the drill rig machines.

Full-interlocking Kelly bar is composed of three weld-on ribs with continuous  concave and convex  keys  During the drilling process, the downward thrust is transmitted to drill bucket directly by rotation power of  Rotary head inner ribs and Kelly bar outer ribs at any time . This type of Kelly bar is the best one of transferring pressure at present , especially for hard ground and frozen oil layer construction. In the drilling process , every continuous steps can form pressure point to reduce  wear and tear of local pressurization key lines, also to avoid the stick problem that Kelly pipe is deformation always in a part pressurization. When drilling progress, driving  the inner  convex concave tooth key and the outer convex concave tooth  key  uniformly forms good engagement, the advantage is force uniform, not easy to stick pipe, particularly to improve work efficiency .  It has gotten high praise from home and abroad rotary rig user.

This type Kelly bar has applied for patent, the patent No. is 201420542679.2.

Beijing JieTaiHongLi Technology Development Co.,Ltd is a high-tech and comprehensive enterprise, which specialize in producing Kelly bar and accessories of drilling rig from 2004 year. Our subsidiary factory located in Shandong ,founded in 2016 year.Also we supply the maintenance service of the entire model drilling rig among in domestic and overseas. We have a professional experienced engineers group with advanced crafts and technology in our R&D department to provide technology support service. The interlocking Kelly bar and frictional Kelly bar produced by our factory with several our own patents to match with IMT, Bauer, Soilmec, Mait, Casagrande and so on. By the export to Indian, American, Canada, Malaysia, Turkey, Russia, etc, we won the sustained good reputation both in domestic and overseas.

We are the manufactory and we welcome any trusted foreign trade company to cooperated with us

1.      Are you manufactory?  

Yes, we are. we can supply any type kelly bar as customer required.

1.     Why you choose us?

 We are manufactory with the favorable price and custom model. We have an experienced engineer team in our R&D department to ensure our quality. We have the certain guarantee period In terms of the different model products.