Jiangsu Hongbao Group Co., Ltd.
| Payment Terms | T/T, L/C |
| Supply Ability | 2000 tons/month |
| Delivery Time | 45 - 60 days |
| Packaging Details | Plywood case, wooden box |
| Standard | ASTM, ASME, API |
| Grade | 4130, 4140, 4145 |
| OD Size | 4-219mm |
| WT Size | 0.5-20mm |
| Shape | Round |
| Application | Oil Well Drilling |
| Production Process | Cold Rolling |
| Brand Name | Hongbao |
| Model Number | HBOWD-1 |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C | Supply Ability | 2000 tons/month |
| Delivery Time | 45 - 60 days | Packaging Details | Plywood case, wooden box |
| Standard | ASTM, ASME, API | Grade | 4130, 4140, 4145 |
| OD Size | 4-219mm | WT Size | 0.5-20mm |
| Shape | Round | Application | Oil Well Drilling |
| Production Process | Cold Rolling | Brand Name | Hongbao |
| Model Number | HBOWD-1 | Certification | ISO9001 |
| Place of Origin | China | ||
| High Light | ASTM A519 alloy steel drill pipe ，seamless chromoly tubing for sour service ，oil well drill pipe with warranty | ||
ASTM A519 Alloy Steel Oil Well Drill Pipe, Seamless Chromoly Tubing for Nonferrous Metal Mining Projects
Description
This ASTM A519 alloy steel drill pipe represents premium-grade seamless mechanical tubing engineered for demanding applications in both oilfield drilling and nonferrous mining operations. Manufactured from chromium-molybdenum steel (typically 4130/4140 grades), it delivers exceptional mechanical properties including high tensile strength, superior torsional resistance, and enhanced fatigue durability.
In oil well drilling applications, the pipe's seamless construction ensures reliable performance under high internal pressure and cyclic loading conditions. Its optimized strength-to-weight ratio enables deeper drilling capabilities while maintaining structural integrity in challenging downhole environments.
For nonferrous mining projects involving copper, lithium, nickel and other metals, this chromoly tubing demonstrates outstanding abrasion resistance against abrasive slurries and corrosive media. It serves excellently in critical roles including high-pressure hydraulic systems, mineral slurry transport lines, and drill rods for blast hole drilling.
The cold-drawn manufacturing process ensures precise dimensional tolerances and improved surface finish while enhancing yield strength through strain hardening. All materials are certified to ASTM A519 standards with complete traceability, guaranteeing consistent performance and reliability in the most demanding operating conditions.
Specification
| Specifications | ASTM, ASME and API |
| Size | O.D.: 4 to 219mm W. T.: 0.5 to 20mm |
| Specialized in | Large Diameter Size |
| Length | Within 13500mm |
| Type | Seamless |
| Shape | Round |
| End | Plain End, Beveled End, Treaded |
Grade 4130 Pipe Chemical Composition
| Element | Content (%) |
| Iron, Fe | 97.03 – 98.22 |
| Chromium, Cr | 0.80 – 1.10 |
| Manganese, Mn | 0.40 – 0.60 |
| Carbon, C | 0.280 – 0.330 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
Grade 4130 Pipe Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength, ultimate | 560 MPa | 81200 psi |
| Tensile strength, yield | 460 MPa | 66700 psi |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (Typical for steel) | 80 GPa | 11600 ksi |
| Poissons ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 21.50% | 21.50% |
| Reduction of area | 59.6 | 59.60% |
| Hardness, Brinell | 217 | 217 |
| Hardness, Knoop (Converted from Brinell hardness) | 240 | 240 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 95 | 95 |
| Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) | 17 | 17 |
| Hardness, Vickers (Converted from Brinell hardness) | 228 | 228 |
| Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.) | 70 | 70 |
Key Features and Benefits
NACE MR0175/ISO 15156 Compliance: Certified for sour service applications with controlled hardness
Superior SSC/HIC Resistance: Specialized manufacturing prevents sulfide stress cracking
Enhanced Mechanical Properties: High yield strength (550-750 MPa) with excellent impact toughness
Seamless Reliability: Homogeneous structure ensures consistent performance in critical applications
Corrosion Resistance: Chromium-molybdenum composition provides improved corrosion resistance
Typical Applications
Mine blasting
Water well drilling
Geothermal wells drilling
Fore poling
Coal
Nonferrous metal mining projects
Quality Assurance
Full traceability and material certification
Comprehensive non-destructive testing (UT, MPI)
Hardness verification throughout length
SSC testing per NACE TM0177 methods
Dimensional inspection to API specifications
Packing
In plywood case and wooden box
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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