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Help CenterSteel Pipe & Tube，Square Steel Tube，Executive Standards - ASTM A500 - EN 10219 / EN 10210 - JIS G3466 - GB/T 6728
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Square Steel Tube – Full Product Detailed Description
1. Product Overview
Square steel tube (Square Hollow Section / SHS) is a high-strength hollow structural steel material manufactured by ERW welding, hot rolling and cold forming processes. With uniform section, high rigidity, strong load-bearing capacity, flat surface and easy processing, square steel pipe is one of the most widely used structural steel products in global construction, municipal engineering, mechanical manufacturing and steel structure projects.
Our square steel tubes are strictly produced according to international standards with stable dimension tolerance, straightness and welding quality. All products are fully inspected before shipment and widely exported to Africa, Central Asia, Southeast Asia and European markets for large infrastructure and industrial projects.
2. Main Product Types
2.1 Hot Rolled Square Tube
Hot rolled square pipe features thick wall thickness, high pressure resistance and excellent overall stability. It is the best choice for main structural frames, building supports, engineering load-bearing structures and heavy construction projects.
2.2 Cold Rolled Square Tube
Cold finished square tube has smooth surface, precise size and uniform wall thickness. It is widely used for mechanical equipment frames, decoration structures and high-precision fabrication works.
2.3 Hot-Dip Galvanized Square Tube
After hot galvanizing treatment, the tube obtains dense zinc coating with outstanding anti-rust and anti-corrosion performance. It is suitable for outdoor environments, coastal areas, greenhouses, guardrails and long-term municipal facilities.
3. Material Grade & International Standards
Common Grades
Q195, Q235B, Q355B, S235JR, S355JR
Executive Standards
- ASTM A500
- EN 10219 / EN 10210
- JIS G3466
- GB/T 6728
Complete certification documents can be provided: Mill Test Certificate, Factory Inspection Report, Quality Certificate and Full Export Documents for customs clearance and project acceptance.
4. Complete Technical Specifications
- Side Size Range: 10×10mm – 500×500mm
- Wall Thickness: 1.0mm – 20mm
- Standard Length: 5.8m / 6m / 12m
- Custom Length: 2m–12m cutting available
- Processing Service: Cutting, bending, punching, drilling, customized galvanization
All sizes and grades are in stock, supporting mixed container loading and customized production.
5. Core Product Advantages
1. Stable Structure & High Strength
Uniform wall thickness, straight pipe body and strong bearing capacity, no deformation under heavy load.
2. High Dimension Accuracy
Strict tolerance control ensures easy welding, installation and assembly for engineering construction.
3. Strong Corrosion Resistance (Galvanized Type)
Uniform zinc layer effectively prevents oxidation and rust, greatly extending outdoor service life.
4. Complete Specifications & Fast Supply
Full range of conventional sizes in stock, supporting small trial orders and large bulk orders.
6. Wide Application Fields
- Steel structure factory buildings, warehouses and workshop frames
- Municipal engineering, road guardrails, street lamp poles and landscape structures
- Bridge auxiliary structures and construction supporting projects
- Mechanical equipment bases, transportation frames and industrial fabrication
- Agricultural greenhouses, outdoor brackets and fence engineering
- High-rise building secondary structures and decorative engineering
7. Export Packaging & Logistics
- Packing: Standard seaworthy bundle packing with steel strips and waterproof wrapping
- Loading Port: Qingdao Port
- Container: 20GP / 40GP full container loading
- Delivery Cycle: 5–7 working days for spot goods
- Support long-term framework orders and customized processing requirements
8. Quality & After-Sales Service
All square steel tubes undergo full-process quality inspection, including size checking, surface inspection and mechanical property testing. We provide stable quality, professional technical guidance and one-stop export service for global buyers.
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