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[China]
Trade Verify
Address: 65 EAST XINHUAN ROAD, SHANGHAI, CHINA
Contact name:Bill, George, Michael
ROSCHEN GROUP |
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Verified Suppliers
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Heavy Weight Rock 5 7/8 Inch Mining Drill Rod
Mining Drill Rod advantages:
1. 95% quality similarity with world top class brands,such as atlas Copco etc.
2. Strong ability in drilling tools production.
3. Strick quality control.
Rotary Subs:
Roschen rotary subs include:
Straight OD subs
Reduced section OD subs
Crossover subs
Bit Subs
Saver Subs
Side Entry Subs
Pump In Subs
The rotary subs are available in standard sizes specified in API
and in a full range of connection combinations. Special sizes and
configurations are available upon request. 
Manufacturing:
All accessories except welded pup joints are manufactured from
solid modified alloy steel bars similar to drill collars which are
fully heat treated to the required chemistry and mechanical
properties. The internal bore is trepanned with precision and
machined to size with comprehensive quality control.
Pictures
