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Help CenterAnti Rust Cold Rolled Hot Dip Galvanized Square Hollow Section Zinc Coated Galvanized Square Tube For Outdoor Engineering Projects
Product Spotlights
Strict quality control, uniform zinc coating, no zinc peeling
Smooth surface, straight tube, stable bearing performance
Custom sizes & cutting length available
Ideal for construction, fence, framework and engineering projects
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1. Product Introduction
Our high-quality hot dipped galvanized square tube and rectangular tube are made of prime carbon steel materials and processed through strict high-frequency welding and hot-dip galvanizing technology. We have sufficient spot inventory and stable stock supply to support fast batch delivery. The steel surface features uniform zinc coating, smooth finish and strong anti-corrosion performance. All products are strictly quality inspected to ensure straight tube body, stable structure and excellent load-bearing capacity. Widely used in construction structures, fence frames, greenhouse supports and various overseas engineering projects.
2. Product Features & Advantages
Premium Anti-rust Performance – Standard hot-dip galvanized layer with strong adhesion, not easy to peel off during cutting, bending and welding. Effectively resist rust and corrosion in outdoor, humid and coastal environments.
Strict Quality Control – Consistent wall thickness, straight tube shape, flat surface without burrs. Stable mechanical property, high strength and long service life.
Complete Specifications – Full size range in stock, support customized sizes, wall thickness and fixed cutting length.
Good Processing Performance – Easy for welding, punching, bending and cutting to meet different project requirements.
Factory Direct Price & Stable Supply – Large production capacity, support bulk order and long-term project cooperation.
3. Product Specifications
Item
Specification
Product Name
Hot Dipped Galvanized Square Tube / Rectangular Tube / GI Hollow Section
Material
Q195, Q235B, Q355B, SS400, S235JR
Production Process
ERW Welded + Hot Dipped Galvanized
Zinc Coating
60–120μm (customized available)
Size Range
Square: 10×10mm–300×300mm; Rectangular: 20×10mm–400×200mm
Wall Thickness
1.2mm–12.0mm
Length
5.8m, 6m, 11.8m, 12m / Custom length
Execution Standard
GB/T6728, ASTM A500, EN10219
Surface Feature
Smooth, uniform zinc layer, no rust, no zinc spangle defect
4. Application Scope
Widely applied in building steel structures, construction framework, fence and guardrail, greenhouse frame, municipal engineering, mechanical equipment supports, warehouse structure and outdoor engineering projects.
5. Packaging & Delivery
Standard export packing with steel strips bundling and waterproof film. Suitable for 20GP/40GP container loading. Support FOB, CFR, CIF international trade terms. Fast delivery for regular sizes.
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