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Grade 4130 Chromoly oil drilling pipe
, high-tensile alloy steel drill rod tubing
, oil well pipe with warranty
Grade 4130 Chromoly Oil Drilling Pipe, High-Tensile Alloy Steel Pipe for Dill Rod Tubing
Grade 4130 Chromoly Oil Drilling Pipe, High-Tensile Alloy Steel Pipe for Dill Rod Tubing
Description
This Grade 4130 Chromoly Oil Drilling Pipe represents a premium-grade seamless alloy steel pipe specifically engineered for demanding drilling applications in the oil and gas industry. Manufactured from AISI 4130 chromium-molybdenum alloy steel, this high-tensile pipe combines exceptional mechanical strength with superior durability, making it an ideal choice for drill rod tubing and other critical downhole components where reliability and performance are paramount.
The pipe's chromium-molybdenum composition provides an outstanding balance of high tensile strength, excellent toughness, and enhanced fatigue resistance, significantly outperforming conventional carbon steel pipes in demanding drilling environments. With typical yield strengths ranging from 70,000 to 100,000 psi (480-690 MPa), this material maintains its structural integrity under extreme torsional stresses, compression loads, and cyclic bending moments encountered during drilling operations.
The seamless manufacturing process ensures a homogeneous microstructure free from welds and imperfections, providing consistent mechanical properties throughout the pipe length. This chromoly drill pipe is heat-treated to achieve optimal mechanical characteristics, including improved impact resistance and better fatigue life compared to standard drilling materials. Its enhanced strength-to-weight ratio allows for deeper drilling capabilities while reducing overall string weight.
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 |
4130 Pipe Chemical Composition
| Element |
Content (%) |
| Iron, Fe |
97.03 – 98.22 |
| Chromium, Cr |
0.80 – 1.10 |
| Manganese, Mn |
0.40 – 0.60 |
| Carbon, C |
0.280 – 0.330 |
| Silicon, Si |
0.15 – 0.30 |
| Molybdenum, Mo |
0.15 – 0.25 |
| Sulfur, S |
0.040 |
| Phosphorous, P |
0.035 |
4130 Pipe Mechanical Properties
| Properties |
Metric |
Imperial |
| Tensile strength, ultimate |
560 MPa |
81200 psi |
| Tensile strength, yield |
460 MPa |
66700 psi |
| Modulus of elasticity |
190-210 GPa |
27557-30458 ksi |
| Bulk modulus (Typical for steel) |
140 GPa |
20300 ksi |
| Shear modulus (Typical for steel) |
80 GPa |
11600 ksi |
| Poissons ratio |
0.27-0.30 |
0.27-0.30 |
| Elongation at break (in 50 mm) |
21.50% |
21.50% |
| Reduction of area |
59.6 |
59.60% |
| Hardness, Brinell |
217 |
217 |
| Hardness, Knoop (Converted from Brinell hardness) |
240 |
240 |
| Hardness, Rockwell B (Converted from Brinell hardness) |
95 |
95 |
| Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) |
17 |
17 |
| Hardness, Vickers (Converted from Brinell hardness) |
228 |
228 |
| Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.) |
70 |
70 |
Key Features and Benefits
High Tensile Strength: Superior yield and ultimate tensile strength for demanding applications
Enhanced Fatigue Resistance: Excellent performance under cyclic loading conditions
Improved Toughness: Better impact resistance than conventional carbon steel pipes
Seamless Construction: Homogeneous structure without weak points or weld defects
Good Machinability: Allows for easy threading and connection manufacturing
Typical Applications
Drill rod tubing for oil and gas exploration
Core drilling and exploration drilling operations
Downhole tool components and assemblies
Mining and geological exploration drilling
Heavy-weight drill pipe and bottom hole assemblies
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