| Outer Diameter | 20*20mm~400*400mm |
| Length | 3-12M according to client requirement |
| Standard | Hollow section: ASTM A500, EN10219, EN10210, JIS3466, GB/T 6728 |
| Material | Gr.A, Gr.B, Gr.C, S235, S275, S355, A36, SS400, Q195, Q235, Q345 |
| Certificate | API , ce, Bsi, BIS, KS, GS, ISO9001 |
| Finish of pipe |
Hot dipped galvanized with zinc 220~260g/m2; |
| Applications |
Construction / building materials steel pipe |
| Techinical | ERW |
| Delivery Time | 15-21 days |
| Place of Origin | Tianjin, China |







Galvanized Steel Tube Square Tube Welded structural steel pipe ERW technique steel pipe Hollow Square Tube ASTM certified GI Pipe 50x 50mm /100x 100mm Greenhouse Building
Product Description
Versatile Structural Member for Industrial Fabrication
This galvanized square tube serves as a reliable structural framing component engineered primarily for construction engineers, procurement managers, and fabricators seeking a robust solution. Its square cross-sectional design ensures uniform load distribution and compatibility with modular frameworks. Steel pipe manufacturers produce this product to satisfy diverse project requirements, offering sizes from 20x20mm up to 400x400mm with lengths customizable from 3 to 12 meters. Target users benefit from its adaptability in creating frameworks, supports, and fixtures, aligning with industrial applications requiring dimensional precision and structural integrity. The product is suitable for both indoor and outdoor use, addressing multiple engineering specifications.
Strict Compliance and Protective Finishes for Longevity
The galvanized square tube is manufactured under rigorous adherence to international standards such as ASTM A500, EN10219, and JIS3466, ensuring measurable quality and performance. Materials include recognized grades like S275, S355, and Q345 delivering certified structural strength. Protective finishes range from hot dip galvanized steel pipe coating of 220–260 g/m² to pre-galvanized layers, offering corrosion resistance optimized for outdoor exposure. Optional painted or oiled surfaces enhance protection and user customization options. The ISO9001 certified manufacturing process facilitates consistent mechanical properties and dimensional accuracy, essential for engineering reliability and system compatibility within steel pipe manufacturers’ portfolios.
Application Scope and Operational Benefits in Engineering Projects
This galvanized square steel product supports a broad spectrum of industrial sectors, including construction, industrial equipment fabrication, fencing, and scaffolding. Its corrosion resistance renders it particularly advantageous for outdoor signage, greenhouse frameworks, and scaffolding where exposure to weather elements demands durability. The product’s design enables seamless integration into structural systems requiring load stability and weather-proofing. Besides primary construction use, it finds applications in industrial shelving and customized metal works, contributing to enhanced operational efficiency and lifecycle cost savings in engineered systems. The galvanized square tube is a dependable choice within the supply chain for robust infrastructure projects.
Product Advantages
Modular Design and Manufacturing Excellence
The galvanized square tube’s design exhibits a consistent square cross-section facilitating standardized connections and seamless integration into modular structural systems. Produced by established steel pipe manufacturers, it features strict adherence to multiple certification standards, thereby guaranteeing compatibility across diverse engineering workflows. The availability of hot dip galvanized steel pipe coating and various surface finishes supports tailored applications, contributing to flexible design choices. Structural adaptability in dimensions—from 20x20mm to 400x400mm—allows straightforward substitution and scalability within fabrication processes, enhancing system efficiency and reducing inventory complexity for procurement teams.
Optimized Corrosion Resistance and User Reliability
Performance-wise, the galvanized square tube demonstrates superior longevity due to its hot dip galvanized steel pipe treatment, which imparts enhanced corrosion protection critical in harsh environments. End users benefit from reduced maintenance requirements and improved structural safety, fostering dependable project outcomes. The product’s lightweight yet sturdy construction simplifies handling and installation, promoting efficiency in logistics and on-site assembly. These attributes, combined with ISO9001-certified production processes, ensure user confidence in consistent quality, operational reliability, and minimized lifecycle costs for large-scale engineering applications.
Use Scenarios
Structural Framing in Commercial and Industrial Construction
In commercial and industrial building projects, galvanized square steel serves as a foundational component for frameworks requiring high strength combined with corrosion resistance. Its role as a square load-bearing member is vital in frameworks subjected to dynamic loads and environmental exposures. The hot dip galvanized steel pipe coating ensures compliance with construction durability standards and resistance to oxidation. Integration with other building materials follows prescribed engineering workflows, facilitating rapid assembly and long-term stability while meeting project safety codes and inspection requirements within demanding infrastructures.
Outdoor Equipment Supports and Protective Barriers
Galvanized square tubes also perform indispensably in outdoor equipment fabrication and protective fencing applications. Their corrosion-resistant surface treatment allows prolonged exposure to elements without compromising structural integrity, which is crucial in public utility installations or agricultural greenhouse supports. These tubes adapt easily within metal fabrication shops for custom assemblies or on-site installations, complying with user specifications for dimensional accuracy and finish quality. The product’s technical attributes guarantee operational safety, durability, and adherence to industry standards, underpinning trusted performance across multiple external environments.
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