Beijing Jietaihongli Technology Co., Ltd.
Beijing Jietaihongli Technology Co., Ltd.
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Beijing Jietaihongli Technology Co.,Ltd
Damping spring is the accessories of the kelly bar parts. the function is to protect the kelly bar and damping , the material is 60Si2Mn .
It is easy to break during using kelly bar .
Different kelly bar is matched different Model ,such as :
45*330*400
55*390*400
50*400*410
55*420*420
70*480*480 .etc
Can supply spring based on kelly bar size or customized type.
(as different machine)
Over the years we focus on research and development of the production of kelly bars, drill tools, with complete kelly bars fabriction and testing equipments, as well as we own professional research , design, sales and after-sales service team. Our company has a number of self-developed patented products, matched with domestic and abroad brands such as SANY, CRRC, XCMG, Bauer, Soilmec, IMT and other brand rigs , exported to Southeast Asia, the United States, Russia, the Middle East and other countries.