| Customization: | Available |
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| Application: | Chemical Industry, Construction Industry, Oil and Gas Industry |
| Carbon Content: | High Carbon Steel |
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ASTM A500 Gr.C Carbon Steel Pipe
1. Overview
ASTM A500 is a U.S. standard specification for cold-formed welded and seamless carbon steel structural tubing used in construction and general engineering. Grade C (Gr.C) is a common grade known for its high strength-to-weight ratio, making it suitable for load-bearing applications. Unlike precision hydraulic tubing (e.g., EN 10305), ASTM A500 Gr.C focuses on structural integrity and cost efficiency for architectural and industrial frameworks.
2. Key Features
Material Composition:
Carbon steel with controlled levels of carbon (0.26% max), manganese, phosphorus, and sulfur.
Enhanced strength through cold-forming processes.
Mechanical Properties:
Minimum Yield Strength: 50 ksi (345 MPa).
Minimum Tensile Strength: 62 ksi (427 MPa).
Elongation: 21% min (in 2 inches), ensuring ductility for structural flexibility.
Manufacturing Methods:
Available in seamless or welded (electric resistance welded, ERW) forms.
Welded variants are cost-effective for non-critical applications; seamless offers uniformity for high-stress loads.
Dimensional Range:
Shapes: Round, square, rectangular.
Sizes: Outer diameters from 0.5" to 26" (13-660 mm), wall thicknesses from 0.035" to 1.0" (0.9-25.4 mm).
Surface Finish:
Bare (mill finish) or galvanized (ASTM A123) for corrosion resistance in outdoor environments.
3. Applications
Structural Frameworks:
Building columns, trusses, and support beams in commercial/residential construction.
Bridges, transmission towers, and highway signposts.
Industrial Equipment:
Material handling systems, conveyor frames, and machinery bases.
Agricultural and transportation equipment (trailers, truck chassis).
Infrastructure Projects:
Scaffolding, guardrails, and fencing due to weldability and formability.
4. Advantages Over Alternatives
High Strength: Superior load-bearing capacity compared to lower grades (e.g., Gr.A or Gr.B).
Cost-Effective: Welded A500 Gr.C tubes offer affordability for large-scale projects.
Versatility: Available in multiple shapes and sizes for diverse design requirements.
Durability: Resists deformation under static and dynamic loads.
5. Limitations
Corrosion Sensitivity: Requires protective coatings (e.g., galvanizing, paint) in corrosive environments.
Precision: Less stringent dimensional tolerances compared to hydraulic-grade tubes (e.g., EN 10305).
Weld Quality: Welded joints may require inspection to ensure integrity in critical applications.
6. Standards & Certifications
Complies with ASTM A500/A500M-21 specifications.
Recognized by AISC (American Institute of Steel Construction) for structural use.
Compatible with ASTM A1085 for higher-performance structural tubing.
7. Market Positioning
ASTM A500 Gr.C is widely adopted in industries prioritizing structural efficiency and cost savings, such as:
Construction: High-rise buildings, warehouses, and industrial plants.
Transportation: Vehicle frames and railcar components.
Energy: Wind turbine towers and solar panel supports.
Conclusion
ASTM A500 Gr.C carbon steel pipe is a go-to material for structural applications demanding strength, affordability, and adaptability. Its balance of mechanical performance and ease of fabrication makes it ideal for construction and heavy machinery. While not suited for high-pressure hydraulic systems (unlike EN 10305), it excels in environments where structural stability and cost efficiency are paramount.
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