Terminal Joint , kelly terminal joint , 35Crmo terminal joint for kelly bar bottom

    Frictional kelly bar doesn't need to unlock the joint of its inner and outer lining so that it is convenient and fast to lift the bar. Non-stair key, friction transmission and the outside key are made by highly wear-resisting tempering steel. Friction Kelly Bar is applicable for layer of soft ground and mud, (mud) sand, gravel.

      Interlocking kelly bar is of great pressure transmission and good anti-contortion perfomance. There are 3 rigid parts between drilling pipes to transfer greater pressure from embedding cylinder. And even at the hard geologic condition, it can transfer greater pressure and drill in. Stair key, organization transmission, the outside key are made by highly wear-resisting tempering steel. Interlocking Kelly Bar is applicable for soft fromations, (weak) weathered rock, hard strata construction.

Terminal joint for kelly bar 

1. Material: Q345B or 35CrMo

2.Type: Interlocking kelly bar, friction kelly bar, combined interlocking and friction kelly bar, square kelly bar etc customized as per requirement

Customized Terminal Joint  

It is the key part of the kelly bar, playing an important role on connecting the kelly bar and water plate . the terminal joint inner is welded kelly strips . it is transfer torque to the kelly bar.

Length: 1.1m/1.2m(as actual condition)

Material:Q345B ,27Simn , 35 Crmo

Kelly bar accessories including kelly stub , kelly spring , disc spring , kelly pipe , kelly strips etc,which with high quality and standard modular design matched with all kinds of home and abroad brands rotary piling rigs kelly bar ,and also can be manufactured according to customers' request.

Beijing Jietai Haoli Technology Development Co., Ltd., founded in 2004, headquartered in Beijing, branch factory in Shouguang, Shandong. The company is mainly engaged in the production and sales of rotary piling kelly bars , drilling tools, rotary piling rig overhaul, rig sales and accessories supply.

Over the years we focus on research and development of the production of kelly bars, drill tools, with complete kelly bars fabriction and testing equipments, as well as we own professional research , design, sales and after-sales service team. Our company has a number of self-developed patented products, matched with domestic and abroad brands such as SANY, CRRC, XCMG, Bauer, Soilmec, IMT and other brand rigs , exported to Southeast Asia, the United States, Russia, the Middle East and other countries.

Our company is equipped with the most advanced welding technology and processing equipments, and the variety of drill tools is complete. Our company is the first manufacturer of full casing in Shandong province, our products the drilling tools are widely used in the construction of various layers,and we also can help customers make targeted research of customized drilling tools.

We own professional maintenance workshop, hydraulic and electrical system maintenance, reducer maintenance and modification, etc., we can provide customers with timely maintenance services; We own spare parts warehouse in Shandong and Beijing, which can realize timely supply service.

Our company is based on the “Conduct myself faithfully,Concentrate on work” as the principle ,based on the service attitude of "customer-oriented", we dedicated to become a good partner with all the rotary drilling rig customers !

We are manufacturer fro piling rig kelly bars and spares for more than 17 years old.

We have two stocks located in Beijing and Shandong ,we can supply timely service.