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ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
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
Processing :
Cold Rolling
Color :
Black
Description

​45MnMoB Grade Drilling Pipe: The Hard-Core Solution for Extreme Conditions​​
Engineered specifically for ​​ultra-deep wells, high-pressure reservoirs, and highly abrasive formations​​, the 45MnMoB-grade drilling pipe combines a ​​high-manganese-molybdenum alloy composition​​ with ​​enhanced mechanical properties​​ to deliver unmatched reliability in challenging drilling environments.

Core Advantages​​
1. Extreme Load-Bearing​​

Tensile strength ≥790 MPa, hardness up to 28–32 HRC (after quenching & tempering), ensuring reliable performance in ​​ultra-deep wells (>3,000m)​​ and ​​high-pressure formations (≥50 MPa)​​.

2. Wear & Corrosion Resistance​​

High manganese (1.05–1.35%) and molybdenum (0.20–0.25%) content enhance abrasion resistance, while a refined microstructure improves fracture toughness for extended service life in harsh conditions.

3. Balanced Toughness​​

Elongation ≥14% balances strength and ductility, effectively absorbing sudden impacts (e.g., stuck pipe, vibration) to prevent brittle failure.

4. Specialized Adaptability​​

Optimized for hard rock, high-sand content, and complex formations. Optional ​​quenching & tempering (QT) treatment​​ further increases surface hardness (up to 32 HRC) for enhanced durability.

​​

Why Choose 45MnMoB?​​
​​Tougher and more wear-resistant than conventional carbon steels (e.g., 1541)​​, yet more cost-targeted than 4130/4140—designed specifically for ​​high-demand drilling scenarios​​.

Mn-Mo alloy formula + precision engineering​​ ensures high-temperature stability and fatigue resistance, meeting modern deep-well requirements.

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)

ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances

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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ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances

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Product Detail
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001, DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Contact Supplier
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ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances
ASTM A519 Core Barrel Inner Tube & Outer Tube 45MnMoB Seamless Steel Oil Well Drilling Pipe With Tight Tolerances

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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