Overview
The 100x80x6 structural rectangular tube is a versatile steel profile widely used in construction and industrial applications. Its rectangular cross-section (100mm × 80mm with a 6mm wall thickness) offers optimal strength and rigidity while minimizing material usage. These tubes are typically manufactured through hot-rolling or cold-forming processes, ensuring consistent dimensions and mechanical properties. In B2B markets, these tubes are supplied in standard lengths (commonly 6m or 12m) and can be customized for specific projects. They serve as foundational components in frameworks for buildings, bridges, and machinery, where their geometric efficiency allows for innovative structural designs.
Structure and Working Principle
The tube's rectangular shape distributes load evenly across its width and height, making it resistant to bending and torsion. The 6mm wall thickness balances weight savings with durability, suitable for moderate to heavy loads. Unlike circular pipes, the flat surfaces simplify connections to other structural elements via welding or bolting. Engineers leverage these tubes in truss systems, where their geometry allows for efficient force transmission. The hollow section also reduces material costs compared to solid bars while maintaining comparable strength. Finite element analysis (FEA) often confirms their performance under calculated stress conditions.
Key Features
Material versatility is a standout feature—carbon steel grades like Q235 (mild steel) and Q345 (high-tensile steel) are common, with optional galvanization or epoxy coating for corrosion resistance. Stainless steel variants (e.g., 304/316) cater to harsh environments but cost significantly more. The tubes comply with international standards such as ASTM A500 (structural tubing) and EN 10219 (cold-formed welded sections). Their dimensional accuracy (±1mm tolerance typically) ensures interoperability in prefabricated structures. Fire resistance and recyclability further enhance their appeal in sustainable construction.
Application Areas
Primary applications include building frames for warehouses and high-rises, where the tubes form columns and beams. In infrastructure, they're used in signage gantries, conveyor systems, and temporary event stages due to easy assembly. Industrial machinery integrates these tubes for equipment frames, robotic arms, and storage racks. Their modularity supports rapid prototyping in automation. Niche uses include agricultural greenhouses (galvanized versions) and artistic installations, where their clean lines suit modern aesthetics.
Maintenance and Precautions
Routine inspections for rust or deformation are critical, especially in humid or chemical-exposed environments. Uncoated carbon steel requires periodic painting or anti-corrosion treatments. Welded joints should be checked for cracks under cyclic loads. During installation, avoid uneven loading that could cause buckling. Use protective caps when stacking to prevent edge damage. For seismic zones, ensure connections are ductile per local building codes. Always follow the manufacturer's load tables to prevent overstressing.
B2B Procurement Guide
Bulk buyers should verify mill test certificates (MTCs) confirming chemical composition and mechanical properties. MOQs vary but often start at 5 tons for standard sizes. Lead times range from 2-6 weeks, depending on customization (e.g., cutting, drilling). Negotiate freight costs—these tubes are bulky but not dense, so shipping efficiency matters. Reliable suppliers offer just-in-time delivery to reduce inventory costs. Consider bonded warehouses for importers to streamline logistics. Eco-conscious projects may prioritize suppliers with ISO 14001 certification.
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