1.Company information

Our company (Hebei Goldman Petroleum Machinery Co., Ltd.) is located in Hejian City, a historical city nearby Capital Beijing. Hejian city is nearby the well known Huabei Oilfield ,which propelled the establishment and development of Goldman.

We specialize ourselves in researching and production of rock drilling bits, mainly including tricone bits, PDC bits, drag bits, HDD hole opener, roller cutters and related tools like drill pipe,rotary slips, and so on. Our products are mainly used for oil well drilling, gas well drilling, geothermal well drilling, mining, geological survey, water well drilling, HDD pipelines projects and foundation projects.

2.Product Detailed Description 

Roller bits for Mining and Rock Drilling 

The strength and wear resistance of inserts are improve by using carbide inserts with high strength and high wear resistance. 

Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing. 
The service life of the bearing is further extended by adopting harder and mort wear resistant material for thrust bearing. 
Preventing reflux structure has dual function, it can avoid air counterflow and dust entering into bearing when the air-compressor stop working accidentally, and separate air and water in order to avoid water entering into bearing when it works normally to prolong the life of bearing. 

Roller bits for Oil Drilling 

1). This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased. 

2). Thrust bearing surfaces are hardfaced and treated with friction reducing technology. 
3). Ball locked cone, suitable for high rotary speed. 

Steel teeth Tricon bits 
1). This series tricone bit use Journal bearing. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the bearing is greatly improved. 
2). O ring seal is made of the more wear resistance high saturated buna-N with the increased seal section and precisely designed sealing flange in the cone sealing area increased the reliability of the seal. 
3). The bit bearing can be ball locked 

For steel tooth bit, the tooth surface is hardfaced with new type of wear resistan 
Material and thus extended working life of the cutting structure while still maintaining high ROP. 

3.Contact Information

Hebei Goldman Petroleum Machinery Co., Ltd.

To:  Sunny Zhao

Tel: 863173236660       

Email: 2737616054@qq.com

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