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
Steel Grade :
30CrMo, 42CrMo, 30CrMnSiA, 40Mn2, 45MnMoB, 30CrMnSiA, 4135, 1541
Execution Standard :
ASTM A519, DIN2391, EN10305-1, GB/T 9808
OD Range :
30-139.7mm
WT Range :
3-19mm
Processing :
Cold Roll, Cold Drawn
Color :
Black
Description

​​4130 Grade Drilling Pipe – Reliable Strength & Weldability for Standard Oilfield Wells​​
​​ A versatile, cost-effective solution for conventional drilling​​, 4130 grade drilling pipe combines ​​balanced mechanical strength, excellent weldability, and durable performance​​ to meet the needs of standard oilfield operations.

​​Key Advantages​​
1. Proven Strength​​ – Tensile strength ≥813 MPa, yield strength ≥690 MPa for reliable operation in ​​wells up to 3,000m depth and moderate pressures​​.

2. ​​Easy Welding​​ – Low-carbon, chromium-molybdenum (Cr-Mo) alloy allows ​​field welding with minimal preheat​​, saving time and costs.

3. ​​Tough & Durable​​ – 15% elongation absorbs vibrations and shocks, reducing crack risks in daily drilling.

4. ​​Cost-Effective​​ – Affordable alloy mix (Cr-Mo optimized) delivers ​​high performance at a lower cost than premium grades​​.

5. ​​Widely Used​​ – Trusted in conventional oil/gas wells, water wells, and geothermal projects worldwide.

​​Ideal for:​​ Standard-depth wells (≤3,000m), moderate pressures, and operations needing strong, weldable pipes.

​​Upgrade to 4140 for extreme depths; choose 1541 for budget-first shallow wells.​

Applications include fore poling (advance support), mine blasting, water well drilling, geothermal well drilling, and coal/nonferrous metal mining.​​

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

Delivery Condition:

1. Stress Relief Annealing after Cold Working (+SR) (BKS)

2. Normalizing (+N) (NBK)

3. Quenching & Tempering (QT)

GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses

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.

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GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses

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Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001,DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Contact Supplier
video
GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses
GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses
GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses
GB/T 9808 Seamless Steel Oil Drilling Pipe 34CrMo4 Steel Coupling Tube with Low Residual Hoop Stresses

Jiangsu Hongbao Group Co., Ltd.

Verified Supplier
8 Years
jiangsu
Since 1958
Business Type :
Manufacturer
Total Annual :
60000000-80000000
Employee Number :
700~1000
Certification Level :
Verified Supplier
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