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Help CenterQ235B S235JR Hot Dipped Square Galvanized Steel Pipe Tube 40x40mm Thickness 2mm ERW
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Hemaokang Steel (Shandong) Co., Ltd. proudly introduces our Q235B S235JR Hot Dipped Square Galvanized Steel Pipe Tube 40x40mm Thickness 2mm ERW, designed for durability and structural integrity across a variety of industrial applications. As a professional manufacturer based in Liaocheng, Shandong, we combine advanced ERW technology with hot-dip galvanizing to deliver a product that excels in corrosion resistance, strength, and long-term performance. Whether you are involved in construction, infrastructure, or general fabrication, this square steel tube is engineered to meet your needs with reliability and cost-effectiveness.
Key Product Features & Benefits
- Superior Corrosion Resistance: The hot-dipped galvanized coating provides a protective layer that resists rust and weathering, making the pipe suitable for outdoor and high-humidity environments.
- Excellent Weldability: Manufactured using ERW (Electric Resistance Welding), the pipe offers a uniform and smooth weld seam, ensuring high strength and leak-proof performance.
- Structural Strength: Made from Q235B and S235JR carbon steel, this square tube delivers reliable tensile strength and load-bearing capability for heavy-duty applications.
- Precise Dimensions: With a size of 40x40mm and a wall thickness of 2mm, the pipe provides consistent cross-section dimensions for easy installation and seamless integration into your projects.
- Versatile Application: Ideal for use in building frameworks, scaffoldings, support columns, fencing, machinery components, and many other structural and mechanical purposes.
- Low Maintenance Requirement: Thanks to the zinc coating, the pipe requires minimal upkeep, saving time and operational costs over the product's lifespan.
| Outer Dimension | 40mm x 40mm |
| Wall Thickness | 2mm |
| Material Grade | Q235B / S235JR |
| Surface Coating | Hot Dip Galvanized (avg. 60-80 µm) |
| Standard Length | 6 meters (custom lengths available) |
| Welding Process | ERW (Electric Resistance Welding) |
Why Choose Hemaokang Steel?
We are committed to delivering high-quality steel products that meet international standards. Our manufacturing facility is equipped with modern production lines and rigorous quality control systems. The company has an annual export value ranging from US$50 Million to US$100 Million, serving clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond. With a dedicated team of 51-100 employees, we ensure careful handling from production to shipment from the port of Qingdao, guaranteeing timely delivery and product integrity.
Product Customization: We understand that every project has unique requirements. We offer customized lengths, packaging options, and additional surface treatments upon request. Our technical team is available to assist you in selecting the right specification for your application.
Quality Assurance: All products undergo strict inspection, and the company holds ISO9001 certification, reflecting our commitment to consistent quality management. This ensures that every batch of square steel pipe meets the highest performance and safety standards.
Trust Hemaokang Steel as your long-term partner for premium galvanized steel pipes. Our competitive pricing, robust production capacity, and customer-centric service have made us a preferred supplier among global buyers. Contact us today to discuss your requirements or request a sample. We are ready to support your project with durable, high-performance steel solutions.
Frequently Asked Questions
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What is the difference between Q235B and S235JR?
Both are carbon structural steel grades commonly used in construction. Q235B is a Chinese standard grade with good tensile and yield strength, while S235JR is the European equivalent (EN 10025). They offer comparable mechanical properties and are often interchangeable for general structural applications. -
Can this square pipe be used for outdoor fencing?
Yes, thanks to the hot-dipped galvanized coating, the pipe is highly resistant to atmospheric corrosion, making it an excellent choice for outdoor fencing, guardrails, and support structures. -
What is the average thickness of the galvanized layer?
The hot-dip galvanized coating typically ranges from 60 to 80 microns, which provides effective protection against rust and scratching, extend product service life. -
Are custom lengths available for bulk orders?
We can produce custom lengths as per your requirements. Standard lengths are 6 meters, and other options are available upon request, usually within a 4-meter to 12-meter range. -
How do you ensure consistent quality across large orders?
Our production is certified under ISO9001, and each batch undergoes dimensional, mechanical, and coating inspections. We maintain strict quality control protocols from raw material selection to final packaging. -
What packaging options do you offer for export?
For export, pipes are packed in bundles with steel strips or wrapped in waterproof materials. In addition to standard packages, various packing methods can be made upon your request to ensure safety during sea transportation. -
Does the pipe require any special maintenance before installation?
No significant maintenance is needed. The galvanized surface is ready to use; however, if the pipe is cut or welded, we recommend applying a zinc-rich paint to the affected areas to preserve corrosion resistance. -
Can I request a material test certificate?
Yes, we can supply a Material Test Certificate (MTC) and inspection documents for qualified orders. These documents confirm the chemical and mechanical properties of the steel, offering full traceability.
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