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| Categories | Oil Drilling Pipe |
|---|---|
| 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 |
| Company Info. |
| Jiangsu Hongbao Group Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Engineered for conventional to mid-depth oilfield wells, 4130 grade drilling pipe delivers optimal strength, weldability, and cost efficiency – making it the reliable choice for diverse drilling operations.
Key Features & Benefits
1. Balanced High Strength - Tensile strength ≥813 MPa, Yield strength ≥690 MPa – Provides reliable load-bearing capacity for medium-depth wells (≤3,000m) and standard pressure conditions (≤35 MPa), ensuring structural integrity during drilling.
2. Superior Weldability - Low carbon content with chromium-molybdenum (Cr-Mo) alloying – Enables easy field welding (minimal preheat/post-weld heat treatment required) while maintaining toughness, ideal for on-site casing connections or repairs.
3. Controlled Toughness & Ductility - Elongation ≥15% – Absorbs dynamic loads (e.g., bit vibration, pressure fluctuations) and resists brittle fracture, ensuring operational safety in varied well conditions.
4. Cost-Effective Performance - Moderate alloy cost (Cr-Mo optimized) – Delivers premium-grade strength at a lower price point than 4140, balancing performance and budget for conventional to mid-range wells.
5. Proven Reliability - Widely used in onshore/offshore conventional wells, water wells, and geothermal projects – Backed by decades of field performance in stable to moderately complex formations.
Why 4130?
1. Versatile Mid-Range Performance – Ideal for wells ≤3,000m with standard pressure/temperature , avoiding over-engineering of high-end grades (e.g., 4140).
2. Weld-Friendly & Easy to Maintain – Simplifies field operations (e.g., welding, threading) without sacrificing strength, reducing downtime and costs.
3. Better Than Carbon Steel – Outperforms basic carbon steels (e.g., 1541) in strength, fatigue resistance, and corrosion resistance (mild environments).
Suitable for mine blasting, water well drilling, geothermal well drilling, fore poling, and mining of coal and nonferrous metals.
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)
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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