ASTM A500 Galvanized Steel Pipe is a high-performance structural tubing solution designed for demanding construction and industrial applications. Manufactured in strict compliance with the ASTM A500/A500M standard (latest revision 2023), this product combines the superior mechanical properties of cold-formed welded carbon steel with the robust corrosion resistance of hot-dip galvanization. It is available in round, square, and rectangular shapes, making it a versatile choice for architects, engineers, and contractors seeking durability, strength, and aesthetic appeal.
Basic info
| Product | ASTM A500 Galvanized ERW Steel Pipe |
| Process | ERW and Hot Dip Galvanized |
| Standard | ASTM A53, A500, API 5L ,BS1387,JIS G3444, EN10219 |
| Grade | GrA, GrB, Q235, S235, S275, S355, STK400, STK500 |
| Size range | OD 1/2"~26"(21.3~660mm), or Sizes 10x10~600x600mm |
| Pipe ends | Plain, Bevel , NPT Threading & Coupling, Grooved |
| Shape | Round, Square, Rectangular |
Manufacturing Process
The production involves two primary stages:
ERW Pipe Manufacturing: Steel coils (typically grades like Q235, Q355, or equivalent to API 5L ASTM A53 Grade A/B) are uncoiled, formed into a cylindrical shape through a series of rolls, and the edges are welded together using electric resistance welding to create a seamless bond.
Galvanizing: The formed ERW pipe undergoes surface cleaning (pickling and fluxing) and is then immersed in a molten zinc bath (hot-dip galvanizing), resulting in a metallurgically bonded zinc-iron alloy layer on its surface.
Surface Treatment: Hot-Dip Galvanizing
Process: The steel pipes undergo a hot-dip galvanizing process, where they are immersed in molten zinc to create a metallurgical bond.
Corrosion Resistance: Provides a thick, uniform zinc coating (typically 60–85 µm or as per customer requirement) that offers superior protection against rust, weathering, and chemical exposure.
Longevity: Significantly extends the service life of the structure, reducing maintenance costs over time. Ideal for outdoor and humid environments.
Features
Superior Corrosion Resistance: The zinc coating acts as a robust barrier and provides sacrificial anode protection, significantly extending the pipe's service life in humid, corrosive, or outdoor environments compared to uncoated carbon steel pipes.
High Strength and Durability: The base material is carbon steel, offering excellent mechanical properties, including high tensile strength and good load-bearing capacity, suitable for structural applications and fluid conveyance under pressure.
Cost-Effectiveness: ERW manufacturing is an efficient process, and carbon steel is widely available, making this product a more economical choice than many alloy or stainless-steel alternatives while offering enhanced corrosion protection over plain carbon steel .
Excellent Weldability and Formability: The pipe maintains good workability, allowing for easier on-site cutting, welding (with proper techniques for galvanized surfaces), and fabrication into various structural and piping systems .
Aesthetic and Protective Finish: The galvanized layer provides a uniform, silvery-gray finish that improves appearance and offers additional protection against abrasion and minor mechanical damage
Applications
Construction & Architecture: Structural frames for buildings, columns, beams, trusses, and roof supports.
Infrastructure: Bridge components, highway guardrails, street lighting poles, and traffic sign structures.
Industrial: Machinery frames, conveyor systems, storage racks, and equipment supports.
Agriculture: Greenhouse structures, irrigation systems, and farm equipment frames.
Outdoor Structures: Fencing, scaffolding, playground equipment, and solar panel mounting systems.
Quality Assurance & Testing
Every batch of ASTM A500 Galvanized ERW Steel Pipe undergoes rigorous quality control measures:
Chemical Analysis: Ensures compliance with carbon, manganese, phosphorus, and sulfur limits.
Mechanical Testing: Tensile tests, yield strength tests, and elongation tests are performed per ASTM standards.
Dimensional Inspection: Precise checks on outer diameter, wall thickness, straightness, and squareness.
Galvanizing Inspection: Verification of zinc coating thickness and adhesion to ensure uniform corrosion protection.
Certification: Mill Test Certificates (MTC) compliant with EN 10204 3.1/3.2 are provided for traceability.
Why Choose Our ASTM A500 Galvanized Steel Pipe?
Compliance: Fully meets international ASTM standards.
Durability: Enhanced lifespan due to premium hot-dip galvanizing.
Cost-Effective: High strength-to-weight ratio reduces material usage and transportation costs.
Customization: Flexible options for sizes, lengths, and zinc coating weights to suit project-specific needs.
For inquiries regarding specifications, pricing, or technical support, please contact our sales team. We are committed to delivering high-quality steel solutions that build the future.
Contact
Kevin
Tianjin Shenzhoutong Steel pipe Co.,Ltd
kevin@tjshenzhoutong.com
Mob/whatsapp/wechat +86 15267768016
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