ASTM A500 Round Square Rectangular ERW Pipe specifically features Electric Resistance Welded (ERW) pipes in both Round and Square/Rectangular cross-sections. Designed for structural applications, these tubes offer an optimal balance of high strength, excellent weldability, and cost-effectiveness, making them a preferred choice for construction, bridge building, and general structural frameworks
Products Description
| Product | ASTM A500 Round Square Rectangular ERW Pipe |
| Process | Electrical Resistance Welding |
| Material Grade | A,B,C,D |
| Size Range | OD 1/2"–26"(21.3–660mm), Thickness 0.055"–1.602"(1.65–26.97mm) |
| Pipe Length | 5.8m, 6m,12m,as requirement |
| Pipe Ends | Plain, Bevel, Threading and coupling, Grooved |
| Surface Treatment | bare, black paint, anti-rust oil,galvanized |
Standards & Grades
Compliant with ASTM A500/A500M-23, the latest version, the tubing is available in four primary grades based on mechanical properties:
Grade A: Minimum yield strength of 46 ksi (315 MPa). Suitable for general light structural uses.
Grade B: Minimum yield strength of 46 ksi (315 MPa) for round tubes; often cited as 290 MPa in some contexts depending on size. The most commonly used grade for general structural applications due to its versatility.
Grade C: Minimum yield strength of 50 ksi (345 MPa) for round tubes. Ideal for heavy-duty structural applications, bridges, and seismic-resistant designs.
Grade D: Minimum yield strength of 36 ksi (250 MPa). Requires heat treatment and is primarily used for round tubing.
Note: While ASTM A500 defines grades A-D, common commercial equivalents often align with material standards such as Q235B or S235JR for Grade B applications.
Manufacturing Process
The ERW manufacturing process involves rolling steel coils into tubular shapes and welding the seam using high-frequency electrical resistance. This method ensures consistent wall thickness, superior surface finish, and precise dimensional tolerances compared to traditional methods.
Surface Treatments & End Finishes
To enhance durability and corrosion resistance, various surface treatments are available:
Black (Mill Finish): Oiled or bare, suitable for immediate painting or indoor use.
Hot-Dip Galvanized (HDG): Provides robust corrosion protection for outdoor structures. Zinc coating typically ranges from 60 g/m² to over 120 g/m².
Pre-Galvanized: For lighter corrosion resistance needs.
Painted/Coated: Epoxy or PE coating upon request.
End Types: Plain ends, beveled ends (for welding), or threaded and coupled.
Applications
ASTM A500 Round Square Rectangular ERW Pipe is widely utilized across multiple industries:
Construction: Steel frames, columns, beams, and trusses for commercial and residential buildings.
Infrastructure: Bridge supports, guardrails, and highway signage structures.
Industrial: Machinery frames, shelving units, and agricultural equipment.
Architectural: Fences, greenhouse frames, solar panel mounting structures, and decorative steel furniture.
Certifications
Quality control
* Hydrostatic Pressure Testing
* Non-Destructive Testing (Eddy Current, Ultrasonic)
* Chemical composition test
* Mechanical Property Testing
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 provided)
* Accept third party inspection before shipment
Welcome to inquire
Kevin
Tianjin shenzhoutong steel pipe co.,ltd
kevin@tjshenzhoutong.com
Mob/whatsapp/wechat +86 15267768016
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