Reverse circulation is a type of drilling technology, the mud fluid inside drill pipe goes from bottom to ground, big size rock chips could be sucked away from hole bottom to avoid breaking repeatly, so the drilling speed is much faster and high efficiency.

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HeBei Solidkey Petroleum Machinery Co., Ltd.

Hebei Solidkey Petroleum Machinery Co., Ltd. locates in Hejian City, a historical city nearby Capital Beijing. Hejian city is one of locations of the well known Oilfield Huabei, rich resources and technical supports propelled the establishment and development of SOLIDKEY.

We specialize in researching and production of rock drilling bits, mainly includes tricone bits, PDC bits, HDD hole opener, foundation roller cutters and related tools, application fields includes oil well drilling, gas well drilling, geothermal well drilling, mining, geological survey, hydrographic survey, water well drilling, HDD pipelines projects, foundation projects.

With high-end equipment in the world, all of our activities are strictly complying with API specifications(Certificate No. Spec-7-1242) and ISO 9001:2015 standards. We have exported to more than 30 countries and areas with professional technical and marketing team, we devote ourselves to provide optimized solutions for various of applications and requirement, optimized solutions for specific projects is our working direction, we have same aim with customers--"Lower the cost of drilling per meter, achieve the most cost effective".