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Drill Pipe & Tubulars
The structural backbone of any successful drilling or completion operation relies on the absolute integrity of its tubular goods. We supply a comprehensive inventory of premium seamless drill pipes, heavy-weight drill pipes (HWDP), and OCTG casing and tubing designed to withstand extreme torque, high tensile loads, and corrosive downhole environments. Engineered to exact API 5DP and API 5CT specifications, our tubulars ensure reliable performance from the surface to the target depth.
- Drill Pipe & Tubulars
- Precision Connections
- Rigorous NDT Inspection
API Certification

Premium Metallurgy

Precision Connections:

Rigorous NDT Inspection

Frequently Asked Questions (FAQs)
In addition to standard API connections (BTC, STC, LTC), we offer proprietary premium threads designed for enhanced torque capacity and gas-tight sealing in high-pressure, high-temperature (HPHT) wells.
In addition to standard API connections (BTC, STC, LTC), we offer proprietary premium threads designed for enhanced torque capacity and gas-tight sealing in high-pressure, high-temperature (HPHT) wells.
Absolutely. We supply non-magnetic drill collars (NMDC) and heavy-weight drill pipes manufactured from specialized austenitic stainless steel to prevent interference with MWD/LWD directional survey tools.
Sample Products
- Grade G105 / S135 available
- Friction-welded tool joints
- Internal plastic coating
- Thick-walled seamless tube
- Extra weight for BHA transition
- Integral center upset
- High torque premium connection
- Grade S135 high-tensile steel
- Extended operational life
- Reduces differential sticking
- Optimized hole cleaning
- Hardbanded tool joints
- Austenitic stainless steel
- Directional drilling compatible
- Zero magnetic interference
- Rigorous NDT inspection
- Grade E75 / X95 options
- Standard NC connections
- Grade J55 / K55
- BTC threaded connection
- Prevents shallow zone collapse
- Grade P110 high-strength
- Premium gas-tight threading
- Isolates production zones
- Grade L80 / N80
- External Upset End (EUE)
- Efficient fluid extraction
- Large diameter stabilization
- Welded or threaded connections
- Initial wellbore protection
- Grade Q125 specification
- Deep wellbore application
- Extreme external pressure rated
- 13Cr / 22Cr alloy construction
- NACE MR0175 compliant
- Resists H2S and CO2 corrosion
- Heavyweight API 7-1 steel
- Provides primary WOB
- Maintains string tension
- Machined spiral grooves
- Reduces wall contact area
- Minimizes differential sticking
- Low magnetic permeability
- Houses MWD/LWD instruments
- High galling resistance
- Connects different thread types
- Machined from AISI 4145H
- Custom thread configurations
- Protects top drive threads
- Sacrificial connection point
- Easily replaceable on rig floor
- Connects drill bit to collar
- Box x Box configuration
- Internal float valve profile
- Composite or steel/plastic design
- Impact and weather resistance
- Available for all API threads
- Adjusts total casing string length
- Matches standard casing grades
- Lengths from 2ft to 12ft
- Cleans mud during pipe retrieval
- High tear-resistant rubber
- Dual and single profile rings
- Center-latch or side-door types
- API 8C certified hoisting
- Secure latching mechanism
- Maintains casing standoff
- Improves primary cementing
- High restoring force
- Aligns pin and box connections
- Prevents thread damage on make-up
- Heavy-duty polyurethane construction
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Need a Technical Quote?
- sales@treteone.com
- +86 19540094137
