Hot Dip Galvanized Steel Square Tube
| Place of Origin: | Zhengzhou,China |
|---|---|
| Brand Name: | RUIISTEEL |
| Materials: | Q235, Q355, etc |
| Surface Treatment: | Hot-dip Galvanizing |
| Side Length: | 15-40mm |
| Thickness: | 0.8-16mm |
| Length: | 3m-12m or customized |
| Certification: | CE, ISO, GB, AISC, SGS, BV |
| Service Life: | Over 50 Years |
| Delivery Time: | 20 Days After Receiving the Deposit |
| Payment: | T/T, L/C |
Product Details
Our hot-dip galvanized steel square tube is made of high-quality low-carbon steel substrates and processed through advanced hot-dip galvanizing processes to form a uniform and dense zinc alloy coating on the inner and outer surfaces of the steel pipes. This product has excellent corrosion resistance, good mechanical properties and long service life, and is widely used in construction, transportation, energy, industrial manufacturing and other fields.

Specification range
Side length: 15mm × 15mm to 400mm × 400mm;
Wall thickness: 0.8mm to 16mm;
Length: 3m – 12m (can be customized on demand);
Implementation standards: GB/T 6728, ASTM A500, EN 10219, JIS G3466, etc.
Advantages of hot-dip galvanized steel square tube
- Excellent corrosion resistance: The thickness of the galvanized layer complies with international standards (such as ASTM A123, BS EN 1461) and can effectively resist erosion from moisture, acid, alkali and salt spray environments. It is suitable for coastal, high-humidity or industrially polluted areas.
- Strong and durable: The square tube structure has high strength, strong load-bearing capacity, and excellent deformation resistance, which can meet the load-bearing needs of building structures, brackets, guardrails, etc.
- Convenient processing: It supports secondary processing such as cutting, welding, bending, and drilling. The galvanized layer has strong adhesion and is not easy to peel off during processing.
- Environmentally friendly and economical: the hot-dip galvanizing process releases no harmful substances and the product can be recycled and reused; long-term protective performance reduces maintenance and replacement costs.

Application scenarios of hot-dip galvanized steel square tube
Building structure: factory frame, sun room frame, glass curtain wall support;
Transportation facilities: highway guardrails, bridge components, station barriers;
Energy engineering: photovoltaic power station brackets, wind power tower bases;
Agriculture and municipal administration: greenhouses, livestock fences, street light poles, billboard brackets.
Quality Commitment
Each batch of products passes chemical composition analysis, mechanical property testing and salt spray testing to ensure that it meets international engineering certification requirements. We provide complete test reports and accept third-party inspections.
Consult now
For customized sizes, surface treatments (such as painting, passivation) or bulk purchasing needs, please contact us to obtain technical parameter sheets and quotations.
We earn the long-term trust of global clients through unparalleled efficiency and relentless pursuit of quality excellence.
Production Workshop Display
The company has a modern production base of over 8,000 square meters, equipped with a steel structure welding workshop, two Italian‑imported sandwich panel production lines, three complete house production lines and an intelligent assembly system. The annual steel structure capacity reaches 150,000 tons, with a daily output of 3,000 square meters of high‑end sandwich panels and 200 sets of modular houses.
Product Packaging & Shipping
Our packing and shipping services offer customized, robust transportation solutions for every product category, ensuring your goods arrive safely worldwide. Steel structural components are packed with sturdy steel frames, forming stable transport units that effectively withstand the bumps and pressure of long-distance sea and land transport. Sandwich panels and container houses are fully wrapped with high-quality protective films, providing moisture, dust, and scratch protection while fully preserving the coating and appearance of the panels. We have deep expertise in export logistics; from packing methods to container loading, every step is professionally optimized to provide you with a worry-free and reliable delivery experience.
Why Choose Us?
- Compliance guaranteed: Complete international certifications, compatible with national standards, reducing application and acceptance risks.
- Cost controllable: Chinese supply and prefabricated construction result in overall cost savings of 15%-25%.
- Schedule guaranteed: BIM collaboration and factory prefabrication enable rapid production and a competitive market advantage.
- Reliable quality: Export-grade processes and rigorous testing ensure both structural safety and durability meet standards.
Frequently Ask Questions
Design drawings → Quotation → Confirmed drawings → Purchase order → Purchase order confirmation → 30% deposit payment → Production → Quality inspection → Balance payment → Shipment.
This depends on the order quantity and the complexity of the customization. Generally, for regular order quantities, delivery time is within 30 days after receiving the deposit.
Yes, samples can be provided, but customers need to pay for the sample fee and international express shipping.
You are welcome to send inspectors at any time. Inspections can be arranged not only during container loading but also at any time during the production process.
We are a manufacturing plant with over 120 employees and a factory area of over 10,000 square meters, where you can enjoy the best prices and competitive costs.
Yes, we have over 10 design engineers. They can create complete solution drawings based on your needs. Software they use includes: AutoCAD, PKPM, MTS, 3D3S, Tarch, Tekla Structures (Xsteel) V12.0, etc.
RuiSteel is a company that highly values quality. We hold ISO9001, BV, SGS, and FM certifications.
Yes, we will send you relevant information and photos at different stages of your order's production so you can get the latest updates in a timely manner.

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