Seamless Chromoly Steel Tubing for Oil Drilling Pipe with High Yield Strength and Enhanced Collapse Resistance
Price:
Negotiable
MOQ:
1MT
Delivery Time:
45 - 60 days
Brand:
HONGBAO
Product Description
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
This high-performance chromoly steel tubing represents a premium series of oil well drilling pipes manufactured from AISI 4130, 4140, and 4145 alloy steels, specifically engineered for demanding casing applications in the oil and gas industry. These seamless chromoly tubes offer superior mechanical properties and enhanced performance characteristics compared to conventional carbon steel pipes, making them ideal for critical downhole operations where reliability and durability are essential.
The triple-grade composition provides engineers with optimized material selection based on specific well requirements: AISI 4130 offers excellent strength with good weldability, AISI 4140 delivers enhanced strength and wear resistance, while AISI 4145 provides the highest strength and hardness for the most demanding applications. All three grades feature chromium-molybdenum alloying elements that contribute to their superior tensile strength, exceptional toughness, and improved fatigue resistance in challenging downhole environments.
Manufactured through advanced seamless extrusion processes, these drilling pipes maintain precise dimensional accuracy and wall thickness consistency throughout their length. The heavy-wall construction ensures maximum collapse resistance and structural integrity when deployed as casing strings in deep well, high-pressure, and high-temperature applications. Each grade undergoes specific heat treatment processes - including quenching and tempering - to achieve optimal mechanical properties tailored to their respective chemical compositions.
Specification
| Specifications | Details |
|---|---|
| Standards | ASTM, ASME and API |
| Size | O.D.: 4 to 219mm W. T.: 0.5 to 20mm |
| Specialized in | Large Diameter Size |
| Length | Within 13500mm |
| Type | Seamless |
| Shape | Round |
| End | Plain End, Beveled End, Threaded |
Chemical Composition
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | ≤0.040 | ≤0.040 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.040 | ≤0.040 | 0.80-1.10 | 0.15-0.25 |
Mechanical Properties
| Steel Grade | Deliver Condition | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|---|
| 4130 | + SR | ≥813 | ≥690 | ≥15% | ≥24 |
| 4140 | QT | ≥950 | ≥850 | ≥14% | 28 - 33 |
Key Features and Benefits
- Superior Mechanical Properties: High yield strength (550-950 MPa) and excellent impact toughness
- Enhanced Collapse Resistance: Heavy-wall design withstands extreme formation pressures
- Improved Fatigue Performance: Excellent resistance to cyclic loading and vibration stresses
- Multiple Grade Options: Tailored material selection for specific well conditions
- Seamless Construction: Homogeneous microstructure without weld defects
Quality Assurance
- Full traceability and material certification
- Ultrasonic testing for defect detection
- Hydrostatic pressure testing
- Dimensional and visual inspection
- Hardness testing and mechanical property verification
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Company
Jiangsu Hongbao Group Co., Ltd.
Location
DAXIN TOWN,ZHANGJIAGANG,JIANGSU P.R.CHINA
Contact Person
Angela