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30CrMnSiA Steel Seamless Oil Well Pipe with Low Residual Hoop Stresses and High-Strength for Demanding Wells

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Jiangsu Hongbao Group Co., Ltd.

Province/State:jiangsu

Country/Region:china

Tel:86-512-58715276

Contact Person:
Ms.Angela View Contact Details

30CrMnSiA Steel Seamless Oil Well Pipe with Low Residual Hoop Stresses and High-Strength for Demanding Wells

Brand Name	HONGBAO
Model Number	HG-OP
Certification	PED, ISO9001,DNV
Place of Origin	China
Minimum Order Quantity	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

Detailed Product Description

GB/T 9808 Seamless Steel Oil Well Pipe 30CrMnSiA Steel Casting Tube with Low Residual Hoop Stresses

30CrMnSiA Grade Drilling Pipe - High-Strength, Corrosion-Resistant & Weldable for Demanding Wells

Engineered for medium-high pressure, weakly corrosive, and dynamic-loading well environments, 30CrMnSiA grade drilling pipe delivers exceptional strength, corrosion resistance, and weldability — making it the reliable choice for challenging oilfield applications.

Key Features & Benefits

High Strength - Tensile strength ≥850 MPa - Outperforms standard carbon steels, ensuring reliable performance in high-pressure wells (35-50 MPa) and critical structural applications.
Corrosion Resistance - 0.80-1.10% Chromium - Forms a protective oxide layer to resist brine, CO₂, and weakly acidic fluids, surpassing non-alloy carbon steels in moderately corrosive environments.
Weldable Design - Low carbon equivalent (Ceq) - Enables low-preheat, post-weld heat treatment-free field welding, reducing downtime and simplifying on-site operations.
Balanced Toughness - Elongation ≥14% - Absorbs dynamic loads from drill bit vibrations and pressure pulses, minimizing crack propagation and extending service life.
Lightweight & Efficient - Lighter than 4140 steel - Reduces tripping loads in deep/extended-reach wells without sacrificing strength.

Why Choose 30CrMnSiA?

Better Than 1541 - Superior corrosion resistance for moderately corrosive wells such as injection and offshore applications.
Cost-Effective Alternative to 4140/4130 - Delivers high strength (near 4130) and weldability at a lower alloy cost than premium grades.
Versatile Performance - Ideal for weld-intensive operations, dynamic-loading wells, and corrosion-sensitive environments.

Perfect for: Medium-high pressure wells, weakly corrosive formations, welding-heavy applications.

For extreme pressures, choose 4140; for shallow/budget wells, consider 1541.

Applications

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

Stress Relief Annealing after Cold Working (+SR) (BKS)
Normalizing (+N) (NBK)
Quenching & Tempering (QT)

Frequently Asked Questions

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.

Product Tags: seamless steel oil well pipe 30CrMnSiA steel casting tube low residual hoop stresses pipe

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