Kelly bar is the key part of a drilling machine, and its quality directly affects the performance of the whole machine. Based on the rich manufacturing experience and by absorbing the advanced technology both at home and abroad, we can produce first-class kelly bars which can be matched with drilling rigs of Bauer, Sany, Soilmec, Casagrande, MAIT, IMT, etc.
Advantages & Features:
Rich manufacturing experience.
Advanced technology of 6-key design, standard modular design.
Advanced processing facilities, processing technic and manufacturing equipments.
Low light, high strength, high straightness.
Thinner tube, smaller inter-tube distance, good abrasion resistance.
Raw materials of seamless steel tube with alloy from Chinese top manufacturer.
All the outer keys have undergone special heat treatment.
Higher hardness, higher flexibility, excellent welding properties.
Product Specification / Models
There are mainly two types of kelly bars:
1 Interlocking Kelly Bar
2 Friction Kelly Bar
Application / Models
1)Interlocking Kelly Bar
Interlocking Kelly Bars are used with piling rigs for drilling in dense sand and gravel and weak to strong rock. The Interlocking Kelly barsmanufactured by UNIMATE can be fully locked by mechancal locking system on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose.
2) Friction Kelly Bar
Friction Kelly Bars are used with piling rigs for drilling in silt, clay and less dense sand and gravel. The friction Kelly Bars manufactured by UNIMATE are un-lockable with drive keys on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose.
UNIMATE Heavy Industry Co., Ltd., affiliated to China Unibusiness Holding Co., Ltd. (Hong Kong), is an advanced technology company dedicated to the R&D, manufacture and trade of various drilling tools, attachments and spare parts.
The main products of our company include drilling buckets, drilling augers, casings, kelly bars, tremie pipe sockets, drilling bits and cutter teeth, etc. Taking improving the level of foundation construction technology as our mission, and by depending on a group of engineers and skilled workers with years of experience in foundation drilling engineering and construction design, our products have reached the advanced level in China in terms of the technology and quality as well.