Jiangsu Hongbao Group Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 3000 tons/month |
| Delivery Time | 45 days |
| Packaging Details | Bundles Package, Wooden Box Package |
| Standard | ASTM A519, GB/T 9808 |
| Grade | AISI 4130, AISI 4140 |
| OD Size | 30-139.7mm |
| WT Size | 3-19mm |
| Shape | Round |
| Production Process | Cold Drawn |
| Application | Oil & gas, automotive, machinery industries |
| Brand Name | Hongbao |
| Model Number | HBOWD-1 |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 3000 tons/month |
| Delivery Time | 45 days | Packaging Details | Bundles Package, Wooden Box Package |
| Standard | ASTM A519, GB/T 9808 | Grade | AISI 4130, AISI 4140 |
| OD Size | 30-139.7mm | WT Size | 3-19mm |
| Shape | Round | Production Process | Cold Drawn |
| Application | Oil & gas, automotive, machinery industries | Brand Name | Hongbao |
| Model Number | HBOWD-1 | Certification | ISO9001 |
| Place of Origin | China | ||
| High Light | AISI 4130 oil well drill pipe ，seamless alloy steel casing pipe ，oil well pipe with warranty | ||
AISI 4130 Oil Well Drill Pipe , Seamless Alloy Steel Pipe for Casing Application
Description
Our AISI 4130 (30CrMo) seamless alloy steel pipes are engineered to meet the rigorous demands of oil and gas drilling operations. Manufactured in strict compliance with GB/T 9808 and ASTM A519 standards, these pipes deliver exceptional strength, toughness, and fatigue resistance, making them ideal for critical applications such as drill pipes, casings, and tool joints.
With precise chemical composition control and advanced heat treatment processes, our pipes ensure superior microstructural integrity, low residual stresses, and high dimensional accuracy. They are rigorously tested for non-destructive quality assurance, guaranteeing reliability in the most challenging downhole environments.
Specification
| Parameter | Details |
|---|---|
| Material Grade | 30CrMo (AISI 4130) |
| Standard | GB/T 9808, ASTM A519 |
| Outer Diameter (OD) | 30 - 139.7 mm |
| Wall Thickness (WT) | 3 - 19 mm |
| Surface Treatment | Black painting, anti-rust oil, or as customer’s requirements |
Delivery Condition
+SR (Stress Relieved): Ideal for machining, ensures low residual stresses and high straightness.
+N (Normalized): Enhances microstructural uniformity and toughness.
+QT (Quenched & Tempered): Provides superior strength and hardness for extreme downhole conditions.
Chemical Composition
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
| 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 |
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 |
Features
Excellent Microstructure: Uniform grain structure for consistent performance under high stress.
High Straightness & Low Eccentricity: Precision cold drawing ensures tight tolerances.
Low Residual Stresses: Stress-relieved treatment minimizes distortion during machining.
Superior Mechanical Properties: High tensile strength (≥813 MPa) and yield strength (≥690 MPa).
Corrosion Resistance: Chromium-molybdenum alloy composition resists downhole corrosive environments.
Application
Drill Pipes & Tool Joints: Core material for high-strength drill string components.
Casing Tubing: Used in sections requiring enhanced mechanical performance.
Couplings & Subs: Critical connections in downhole assemblies.
Packing
Standard Export Packing: Steel-strapped bundles with plastic end caps and waterproof wrapping.
Customized Options: Wooden crates or pallets available for extra protection.
Marking: Each bundle tagged with grade, size, heat number, and weight for full traceability.
Shipping: Optimized for global logistics via sea or air freight.
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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