KR Drilling Machinery Manufacturer around 10,0000 sq.mtr are located in  Hebei Province, China. KR is a professional company which specialized in producing Kelly bar, Drilling tools, Casing tube, Drilling rig Accessories. Accumulating as a result through knowledge for best solution to be made  available to the important contractors and companies involved in building and foundation work. Our ability to combine professional experience and quality research with deep understanding of customers' global needs without forgetting to be competitive was decisive for our success. Thanks for skilled and motivated workers. KR Kelly bars and Drilling tools are the result of years of research,investigation and innovation in the mechanical excavation sector. Collecting data from different jobs sites, testing our tools in different soil conditions and studying the performance in environments varying from very sift soils to the most difficult geological conditions, understanding clients needs and verifying performances,has positioned. KR as one of the most cost effective tools available on the market.  Our aim is client satisfaction and after-sale assistance! Why you choose us? 1. Seasoned R&D and Manufacturing Terms With 15 years of professional experience in Kelly bar design and manufacturing. KR Drilling is capable of providing overall construction solutions and designing customized high quality Kelly bar based on various drilling conditions that the customers encounter. If you require any assistance or would like to discuss this further, warmly welcome visit us! Our KR Drilling team is always around for full-range service and support. If you require any assistance or would like to discuss this further, please don`t hesitate to contact m 2. Top Quality Raw Materials The raw materials o f steel pipes we use are supplied by the best manufactures in China with CE certifications. Our Kelly bars are made of high strength alloy-steel tubes with high torsional and compressive strength which will meet the strict requirements for drilling in hard formations. 3. More Life Out of our Wear Parts The key components such as drive keys, locking recesses are made of high strength and wear-resistant materials with special heat-treatment that would help to improve the life of these parts. The internal drive keys are made of high strength and wear-resistant steel plate. These welded components also undergo special heat treatments. It not only improves the drive keys wear resistant properties, but also the welding properties.   KR Drilling machinery is one of the leading manufactory in China dedicated to providing high quality Kelly bars for piling rigs.  The interlocking and Friction Kelly bar we supplied ranges from Outer diameter 299mm to 630mm, from 3 section to 6 sections, For internationally renowed brands of drilling rig including Bauer Bauer / Soilmec/ Casagrande/ Liebherr/ IMT / Mait / Sany /XCMG/ Sunward/ Zoomlion/ TEG.... 1. Kelly bar ( Interlocking Kelly bar/Friction Kelly bar/Customized Kelly bar/Square Kelly bar...) 2. Drilling tools (Drilling Buckets/Drilling Auger/Core barrel/Drilling bits/Rollers...) 3. Casing Parts (Casing Pipe/Casing Driver/Casing Connector/Casing Shoe/Teeth/Bolts...) 4. Hydraulic Parts (Gearbox/Motor/Pump, Small hydraulic parts...) 5. Electric parts & Valve group 6. Piling rig Structure parts ( Kelly guide/ Swivel joint/ Rotary sleeve /Terminal joint / Spring/ Slew bearing/Ropes...) 7. Undercarriage parts (Track rollers/Guide roller..) All in one words, One-Stop service for Drilling rig.