Outer Diameter 90MM 4130 Oil Drilling Pipe Alloy Steel Pipe for
Casing Pipe
Description
This AISI 4130 30CrMo Chromoly Alloy Oil Drilling Pipe represents a
premium-grade, heavy-wall seamless steel pipe specifically
engineered for the most demanding casing and production
applications in the oil and gas industry. Manufactured from
chromium-molybdenum alloy steel conforming to both AISI 4130 and
30CrMo specifications, this robust piping solution combines
exceptional mechanical strength with superior corrosion resistance,
making it ideal for critical downhole applications where
reliability and longevity are paramount.
The pipe's heavy-wall design provides enhanced collapse resistance
and superior structural integrity, enabling it to withstand extreme
external pressures, high axial loads, and severe mechanical
stresses encountered in deep well and high-pressure applications.
The chromium-molybdenum alloy composition (typically containing
0.28-0.33% carbon, 0.8-1.1% chromium, and 0.15-0.25% molybdenum)
delivers an optimal balance of high tensile strength, excellent
toughness, and improved fatigue resistance compared to conventional
carbon steel pipes.
This seamless chromoly pipe undergoes precise heat treatment
processes including quenching and tempering to achieve mechanical
properties typically featuring yield strengths of 550-750 MPa and
tensile strengths of 700-900 MPa, while maintaining excellent
impact toughness at various temperature ranges. The heavy-wall
construction ensures maximum resistance to deformation under load
and provides extended service life in both casing and production
applications.
Specification
| Product Name | Oil Well Drilling Pipe |
| Material | 30CrMo,42CrMo,4130, 4140 |
| Standard | ASTM,DIN.GBJIS |
| Wall Thickness | 4-219mm |
| Outer Diameter | 0.5-20mm |
| Packing | Bundle, or with al kinds of colors PVC or as your requirements |
| Surface | Black painting varnish paint, anti rust oil, hot galvanized,cold
galvanized |
| Application | Mine blasting, water well drilling, geothermal wells drilling, fore
poling, coal and nonferrous metal mining projects |
Chemical Composition
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | B |
| 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 | |
| 45MnMoB | 0.43-0.48 | 0.17-0.37 | 1.05-1.35 | ≤0.020 | ≤0.015 | | 0.20-0.25 | 0.001-0.005 |
| 1541 | 0.36-0.44 | - | 1.35-1.65 | ≤0.040 | ≤0.050 | | | |
| 30CrMnSiA | 0.28-0.34 | 0.90-1.20 | 0.80-1.10 | ≤0.020 | ≤0.015 | 0.80-1.10 | | |
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 |
| 45MnMoB | + N | ≥790 | ≥600 | ≥14% | - |
| 1541 | + SR | ≥813 | ≥690 | ≥15% | ≥24 |
| 30CrMnSiA | QT | ≥850 | ≥750 | ≥14% | 26-31 |
Key Features and Benefits
Enhanced Collapse Resistance: Heavy-wall design withstands extreme
external pressures
Superior Mechanical Strength: High yield and tensile strength for
deep well applications
Excellent Fatigue Resistance: Performs reliably under cyclic
loading conditions
Improved Corrosion Resistance: Chromium content provides better
corrosion resistance than carbon steel
Seamless Reliability: Homogeneous microstructure without weld
defects or imperfections
Typical Applications
Production tubing in high-pressure wells
Casing strings for deep well applications
Surface casing and intermediate casing
High-pressure injection and production lines
Downhole tools and completion equipment
Packing
Standard Export Packing: Bundles with plastic end caps or wooden box package
