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4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
Specifications
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
ISO9001
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Payment Terms :
L/C, T/T
Supply Ability :
3000MT/Month
Delivery Time :
45 - 60 days
Packaging Details :
Plywood case, wooden box
Material :
30CrMo（4130/34CrMo4）, 42CrMo（4140/42CrMo4）, 40Mn2, 45MnMoB, 30CrMnSiA, 4135, 1541
Standard :
GB/T 9808, ASTM A519, DIN2391, EN10305-1
OD Range :
4-219mm
WT Range :
0.5-20mm
Processing :
Cold Rolling
Description

​4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe

​Description

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 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, Treaded

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

4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe

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4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe

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Product Detail
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
ISO9001
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Contact Supplier
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4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe
4140 4130 4145 Chromoly Steel Tubing Oil Drilling Pipe for Casing Pipe

Jiangsu Hongbao Group Co., Ltd.

Verified Supplier
8 Years
jiangsu
Since 1958
Business Type :
Manufacturer
Main Products :
Welded Steel Tube, Precision Steel Tube, Hollow Steel Tube
Total Annual :
60000000-80000000
Employee Number :
700~1000
Certification Level :
Verified Supplier
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