MachineU > China Products > Minerals & Metallurgy
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
Specifications
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001, DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Payment Terms :
L/C, T/T
Supply Ability :
3000MT/Month
Delivery Time :
Negotiable
Packaging Details :
As required
Material :
30CrMo（4130/34CrMo4）, 42CrMo（4140/42CrMo4）, 40Mn2, 45MnMoB, 30CrMnSiA, 4135, 1541
Standard :
GB/T 9808, ASTM A519, DIN2391, EN10305-1,
OD Range :
30-139.7mm
WT Range :
3-19mm
Description

High-Performance Oil & Gas Drilling Pipes (4130 Grade) – Key Features & Benefits​​

​​1. Superior Mechanical Strength​​

  • •

    ​​Tensile Strength: ≥813 MPa​​ (Ensures resistance to burst/collapse under high downhole pressures).

  • •

    ​​Yield Strength: ≥690 MPa​​ (Withstands heavy loads during drilling operations without permanent deformation).

​​2. Excellent Ductility & Toughness​​

  • •

    ​​Elongation: ≥15%​​ (Absorbs shock loads and vibrations, reducing the risk of brittle fracture in harsh environments).

​​3. Optimized Hardness (≥24 HRC)​​

  • •

    Balanced hardness for ​​wear resistance​​ (protects against abrasion from drilling cuttings) while maintaining ​​machinability​​ and ​​impact toughness​​.

​​4. Reliable Delivery Condition (+SR: Stress Relief Annealed)​​

  • •

    ​​Stress relief annealing​​ minimizes internal stresses from manufacturing, ensuring dimensional stability and preventing cracking during service.

​​5. Proven Alloy Composition (4130 Steel)​​

  • ​​Chromium-Molybdenum (Cr-Mo) alloy​​ enhances:

  • Ⅰ. ​​Fatigue resistance​​ (critical for cyclic loading in extended reach drilling).
  • Ⅱ. Corrosion resistance​​ (better than carbon steel in mildly aggressive fluids).
  • Ⅲ. Weldability​​ (simplifies field repairs/joints).

​​6. Ideal for Demanding Applications​​

  • •

    Suitable for ​​oil/gas well drilling​​, ​​geothermal wells​​, and ​​mineral exploration​​ where ​​high strength-to-weight ratio​​ and ​​reliability​​ are paramount.

​​Why Choose Our 4130 Drilling Pipes?​​

Ⅰ. ​​Higher Safety​​ – Lower risk of failure under extreme pressures/temperatures.

Ⅱ. Cost-Effective​​ – Balances performance and affordability compared to premium alloys (e.g., 4140).

Ⅲ. Global Standards Compliance​​ – Meets API and industry specifications for critical drilling operations.

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

4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing

4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing

4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing

FAQ:

1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.
You need to in charge of Express costs.

2. How about your production capacity?
3000 tons/Month.

3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.

4. Where is your factory?
Zhangjiagang city, 1.5 hours away from Shanghai.

5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements

6. How about the minimum order quantity?
Normally for one size above 1 ton.

Welcome to contact us! Thanks.

Send your message to this supplier
Send Now

4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing

Ask Latest Price
Watch Video
Product Detail
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001, DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Contact Supplier
video
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing
4130 Steel Oil Well Drilling Pipe 30-139.7mm OD Seamless Casing

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
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Oil Drilling Pipe
MachineU China Products Minerals & Metallurgy
Contact Supplier
Submit Requirement