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.
