The inner keyboard and outer keyboard are integrally forged with high-strength steel. Special heat treatment gives this style of kelly high wear resistance, compression resistance and excellent weldability. The kelly is based on the configuration and working conditions of domestic drilling rigs, combined with advanced manufacturing technology at home and abroad, and is matched with domestic and foreign rotary drilling rigs.

1. Adopt international advanced six-key power distribution technology and standard modular design.
2. The whole set of kelly is light in weight, high in strength, high in single-section straightness, thin in pipe wall, small in joints between joints, and good in wear resistance of internal and external keys, which greatly meets the special requirements of rotary drilling rigs.
3. The material specifications are complete, and the kelly can be matched with any rotary excavator at home and abroad. All our kellys are full torque and have a maximum digging depth of 100 meters.
4. Our kelly is made of special customized seamless steel pipes made of domestic high-quality alloys, and can also be made of high-strength seamless steel pipes imported from Germany according to customer requirements. We have 3 types of kelly, interlocking, friction. and combination. The kelly length depends on the actual needs of the customer or the parameters of the drilling rig.

Company profile

Langfang Yilunkai Group, whose predecessor is Quansheng Machinery Plant (founded in 1992), is established in July, 2006 with 10 million RMB of total registered capital. The Group owns 3 subsidiaries,which is Langfang Yilunkai Foundation& Engineering Co., Ltd,Tianjin Jinyiyuan Heavy Machinery Manufacturing Co., Ltd ,andLangfang Yilunkai Mechanic & Electronics Technology Co., Ltd.Tianjin Jinyiyuan Heavy Machinery Manufacturing Co., Ltd is blessed with geographical advantage as it is located in the Beijing-Tianjin-Hebei region .It mainly manufactures three series of productions, which are:

A. Rotary drilling tools;

B. casing of casing rotator and Rotary drilling, grab bucket;

C. Rotary drilling kelly bar Currently.