Tianjin Brisk Steel is one of the manufacturers of ASTM A500 GR.C Round Pipe For Heavy Steel Structure in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
PRODUCT
Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe
The Engineering Behind ASTM A500 Grade C
- ASTM A500 is the standard specification issued by the American Society for Testing and Materials for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing. Within this specification, Grade C represents the highest strength tier available, outperforming Grades A and B in both yield and tensile limits.
- Unlike standard fluid-conveying pipes, ASTM A500 Gr. C round pipes are engineered specifically for structural and load-bearing applications. The flat carbon steel strip is progressively formed at room temperature into a round profile and joined using high-frequency electric resistance welding (ERW) or produced seamlessly. This cold-forming process alters the steel's grain microstructure, boosting its mechanical limits and delivering an exceptionally clean surface finish.
Technical Specifications & Product Range
We export certified ASTM A500 Gr.C round hollow sections configured to standard global engineering frameworks:
| Parameter | Specifications & Capabilities |
| Standard Compliance | ASTM A500 / A500M (Grade C Explicit) |
| Product Profile | Cold-Formed Welded Carbon Steel Structural Tubing in Rounds |
| Outer Diameter (OD) | 1.66" to 20" (42.2mm – 508.0mm) |
| Wall Thickness (WT) | 0.109" to $0.625" (2.77mm to 15.88mm) |
| Standard Lengths | 20ft (6.0m), 40ft (12.0m), or custom engineered fixed cuts |
| End Finish | Square Cut (Plain Ends) with internal/external deburring |
| Quality Inspections | Flattening Tests, Flare Tests, Eddy Current NDT, Full Heat Trace |
Primary Applications Across Global Industries
- Long-Span Roof Trusses: Deployed as the primary structural chords in expansive architectural geometries, such as convention centers, airport terminals, and mega-stadium roofs.
- Heavy Structural Columns: Utilized as vertical, concrete-filled load-bearing columns in high-rise commercial complexes and industrial plant modules.
- Bridge Support Components: Serving as structural arches, stay cable casings, and pier bracings in heavy highway and pedestrian bridges.
Frequently Asked Questions (FAQ)
Q: Can ASTM A500 Grade C round structural pipes be utilized interchangeably with ASTM A53 Grade B or API 5L pipes?
A: While they may physically look identical, their intended application standards are fundamentally different. ASTM A53 and API 5L are engineered primarily as pressure piping standards for fluid and gas transmission, where hydrostatic testing is mandatory. ASTM A500 Grade C is a dedicated structural standard optimized for load-bearing mechanics, enforcing stricter dimensional tolerances, higher minimum yield strengths (46,000 psi vs. 35,000 psi for A53), and specific flattening tests geared toward architectural fabrication safety.
Q: Why is the "Radius of Gyration" of a round HSS section superior to open steel sections for heavy columns?
A: An open profile, such as a universal H-beam or wide-flange column, has a strong axis and a weak axis, meaning it can buckle far more easily in one direction than the other. A round ASTM A500 Grade C pipe has an identical radius of gyration across all radial directions. Under immense vertical compression loads, it offers completely symmetrical buckling resistance, which allows structural engineers to eliminate extra directional bracing.
Q: How does your mill prevent internal weld-seam imperfections in heavy-wall structural round tubes?
A: Our High-Frequency Induction (HFI) welding lines operate under a real-time, automated monitoring matrix. Immediately following forge welding, the seam undergoes continuous Online Eddy Current Non-Destructive Testing (NDT) to scan for micro-voids or lack-of-fusion. Furthermore, we subject samples from every production heat lot to aggressive Mechanical Flattening Tests, where the round tube is crushed flat with the weld line positioned at $90^\circ$ to verify the seam is as structurally sound as the base steel matrix.
Q: What type of documentation do you provide to verify compliance with US and European structural audits?
A: Every shipment is dispatched with an official, fully traceable Mill Test Certificate (MTC) compliant with EN 10204 3.1. The document details the exact chemical composition (Carbon, Manganese, Phosphorus, Sulfur), heat melt identification numbers, and physical mechanical properties (Tensile Strength, Yield Strength, and Elongation percentage), providing structural inspectors with a fully verifiable compliance paper trail.
BRISK STEEL
As an ISO 9001 certified manufacturer and global exporter, our facility integrates advanced rolling mills, automated sizing lines, and rigorous non-destructive testing (NDT) to ensure every tube delivers maximum field performance. We provide comprehensive EN 10204 3.1 Material Test Certificates (MTC) with every shipment, ensuring complete traceability and compliance with your local building codes.
Hot Tags: astm a500 gr.c for heavy steel structure, China astm a500 gr.c for heavy steel structure manufacturers, suppliers, factory, erw pipe bends, erw pipe corrosion resistance, erw pipe international trade, erw pipe painting process, erw pipe social impact, erw pipe thickness accuracy
