Jiangsu Hongbao Group Co., Ltd.
| 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 |
| Brand Name | HONGBAO |
| Model Number | HG-OP |
| Certification | PED, ISO9001, DNV |
| Place of Origin | China |
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Product Specification
| 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 |
| Brand Name | HONGBAO | Model Number | HG-OP |
| Certification | PED, ISO9001, DNV | Place of Origin | China |
| High Light | seamless oil drilling coupling tube ，1541 steel grade oil pipe ，oil drilling pipe with microstructure | ||
When your drilling operation prioritizes efficiency, affordability, and reliable performance for standard conditions, the 1541-grade drilling pipe delivers exactly what you need. This budget-friendly carbon-manganese steel solution is engineered to handle routine well depths, stable formations, and cost-sensitive projects without unnecessary frills – making it the smart choice for maximizing value on every meter drilled.
Unbeatable Cost Efficiency
No expensive alloys (Cr/Mo-free) – Directly reduces raw material costs by 20–30% compared to high-end grades like 4140.
Simplified processing (normalized only) – Eliminates costly heat treatments, slashing production expenses while maintaining core strength.
Solid Performance for Standard Wells
Tensile Strength: 800–950 MPa | Yield Strength: 600–750 MPa – Delivers ample load-bearing capacity for wells up to 3,000m depth and medium pressure (≤35 MPa).
Elongation ≥16% – Provides flexibility to absorb minor shocks (e.g., tripping, rotation) without compromising structural integrity.
Field-Friendly & Easy to Work With
Excellent weldability – No preheating or post-weld heat treatment needed for standard field joints, accelerating on-site operations.
Good machinability – Supports efficient threading and end finishing, reducing manufacturing and maintenance downtime.
Adaptable to Common Formations
Engineered for soft-to-medium-hard rock (e.g., sandstone, shale, clay) with low abrasion risk, thriving in vertical wells, shallow gas storage, and exploration holes.
Your project involves:
Shallow to mid-depth wells (≤3,000m)
Stable formations (low abrasion, ≤35 MPa pressure)
Budget-conscious planning
High-volume drilling with simplified logistics
Not ideal for:
Ultra-deep wells (>3,000m) or high-pressure reservoirs (≥50 MPa) → Upgrade to 4140.
Highly abrasive formations (e.g., hard granite, gravel layers) → Consider 4140 or hardened variants.
Why Drillers Love 1541:
“Just enough” strength – Meets standard well demands without over-engineering.
Lowest total cost per meter – Balances performance and affordability for high-efficiency operations.
No specialty handling required – Welds, machines, and transports with ease.
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 |
| 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)
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.
Company Details
Business Type:
Manufacturer
Year Established:
1958
Total Annual:
60000000-80000000
Employee Number:
700~1000
Ecer Certification：
Verified Supplier
Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali... Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali...
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