1.Desigened according to advanced Modular-element principle with six ribs laid on tubes.
2.The advantages of our Kelly bar, such as low weight, high strength, high abrasion-resistance, high-reliability are safeguarded by technologically by superior process, advanced machining equipments and special fixtures.
4.Complete model series and flexible design and manufacture ensure the ability to supply Kelly bar to matched with any model of drilling rigs worked in China which are locally-ade or imported that our Kelly bar.
5.Take use of alloy tube imported form Germany Mannesmann or locally-made. Special hot-treatment enhances the materialЎЇs strength more than 800Mpa.
6.Ribs made of alloy hot-treated specially enjoys both high hardness and perfect welding performance, high abrasion-resistance leads to high-reliability.
7.Several service centers and rich experience of repairing Kelly on jobsite or in workshop benefit customers to enjoy rapid service.