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Premium Carbon Steel Pipe for Machinery | High-Strength & Seamless Design
Premium Carbon Steel Pipe for Machinery | High-Strength & Seamless Design
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Premium Carbon Steel Pipe for Machinery | High-Strength & Seamless Design
Product Overview
Our carbon steel pipe is engineered for heavy-duty industrial applications, combining seamless design with exceptional mechanical properties. Ideal for machinery, hydraulic systems, and structural frameworks, it outperforms alternatives like carbon fiber pipe in high-pressure and high-temperature environments. Compatible with carbon steel pipe fittings, this product ensures leak-proof connections and long-term reliability.
Technical Specifications
Key specifications are summarized below:
| Attribute | Details |
|---|---|
| Material Grades | E355, E235, 10#, 20#, Q355B, ASTM A53 Gr.B, API 5L X42-X70 |
| Outer Diameter (OD) | 3mm – 200mm (seamless); 0.3mm – 200mm (welded) |
| Wall Thickness | 0.5mm – 20mm (±0.1mm tolerance for cold-rolled pipes) |
| Hardness | HRB 72–89 (varies by grade); Tensile Strength: 320–480 MPa |
| Standards | ASTM A519, DIN 2391, EN 10305-4, ISO 9001, API 5L |
| Surface Treatment | Bright annealing, galvanized, black phosphated, or mirror finish |
| Delivery Conditions | Cold drawn (+C), annealed (+A), normalized (+N), quenched & tempered (QT) |
| Applications | Hydraulic systems, automotive fuel lines, construction machinery, heat exchangers |
Mechanical Properties
Tensile Strength
Our carbon steel pipe achieves tensile strengths between 320 MPa (Grade 20#) and 480 MPa (Grade X70). This ensures resistance to deformation under extreme loads, making it suitable for oil/gas pipelines and hydraulic systems. The seamless design eliminates weld seams, reducing weak points and enhancing structural integrity.
Bend Strength
Cold-rolled pipes maintain bend strength up to 360 MPa, with tighter dimensional tolerances (±0.1mm) for precision applications like automotive components. The absence of internal stress cracks ensures longevity even under cyclic loading.
Identification & Marking
Pipes are laser-etched with:
- Material Grade (e.g., E355, ASTM A53 Gr.B)
- OD/Wall Thickness (e.g., 50mm x 5mm)
- Standard Compliance (e.g., DIN 2391)
- Heat Treatment Code (e.g., +SR for stress-relieved).
Weight Calculation
Use the formula to calculate pipe weight per meter:
Example: For a 50mm OD pipe with 5mm wall thickness:
This formula applies to all carbon steel pipe grades and simplifies logistics planning.
Why Choose Our Carbon Steel Pipes?
1. Precision Manufacturing
Our cold-drawn and seamless processes ensure ±0.1mm tolerance, critical for hydraulic systems and machinery components.
2. Corrosion Resistance
Advanced coatings like 3PE (fusion-bonded epoxy) extend service life to 50–100 years, even in harsh environments.
3. Custom Solutions
Tailor dimensions, coatings (galvanized, phosphated), and delivery states (annealed, tempered) to meet project-specific needs.
4. Global Certifications
Compliant with ASTM, EN, ISO, and API standards, validated by third-party inspections.
5. Sustainable & Cost-Effective
100% recyclable material with lower lifecycle costs compared to carbon fiber pipe.
Applications Beyond Machinery
- Oil & Gas: API 5L-compliant pipes for high-pressure pipelines.
- Construction: Structural support columns and frameworks.
- Water Systems: Corrosion-resistant galvanized pipes for municipal supply.
Why Choose Us?
- Decades of Expertise: Since 2007, we’ve delivered 8,000+ tons annually, serving industries from automotive to aerospace.
- R&D Innovation: Focused on high-precision tubes for hydraulic and fuel systems.
- Global Logistics: CFR, CIF, and FOB delivery options with 10–30-day lead times.
- Quality Assurance: ISO 9001 and CE certifications guarantee performance.
