Components of a good bore piling MAIT rotary drilling rig kelly bars

Mait rotary drilling rigs are widely used in different foundation construction conditions. Choose a good kelly bar for your MAIT rotary drill rig could highly improve the work efficiency. We would like to introduction our UNIDRILL bore piling interlocking and frictions kelly bars to customers at both home and abroad. What are good components for a good bore pile drilling kelly bar? How to evaluate a bore piling kelly bar's quality? Firstly, the raw material plays the greatest impact. To the materials, as a bore pile drilling tools manufacturer, UNIDRILL bore piling kelly bar factory adopt top quality seamless steel tube from China's leading steel factory. The material of 1st-2nd section is Q345B, the 3rd-5th section is 35CrMo. Features of 35CrMo feature is high static strength( the article is written by Drillmaster-UNIDRILL brand sales@unikelly.com, no one may reprint it, otherwise we will pursue the legal responsibility), impact toughness and high fatigue limit, good wear resisting. Material of kelly bar drive gib is 30CrMnTi hardening ( in China, other suppliers use 20CrMnTi). Why use 30 CrMnTi as the material of kelly bar drive gib, because:

30CrMnTi hardening gib was made by several multiple drawings and heat treatments

High strength, great toughness, with good abrasion-resistance on the surface

Without any cross breaking during bad condition formation.

The matrial of UNIDRILL kelly box is 35CrMoHardening, integrally forged. Forging and forming of high strength steel into a ingegrally unit, with multiple heat-treatment, with high impact and fatigue resistance, that’s also the reason why UNIDRILL bore pile drilling kelly bar is so durable in use.

Note: The ownership of the article belongs to DRILLMASTER, and no one may reprint it, otherwise we will pursue the legal responsibility.