Galvanized square rectangular pipe is formed by cold bending of galvanized strip steel and then high-frequency welding, or by integral hot-dip galvanizing of black square rectangular pipe. Reasonable stress on square and rectangular sections, flat surface, convenient for bolt connection and on-site installation, it is a kind of pipe material widely used in structural engineering.
Standards and Material
Execution standard: GB/T 6725 "Cold-formed hollow steel sections for general structure", GB/T 6728 (dimensions, shape, weight and allowable deviations)
Hot-dip galvanizing: GB/T 13912 "Metallic coatings - Hot dip galvanized coatings on iron and steel articles - Technical requirements and test methods"
Common materials: Q235B, Q355B
Conventional Specifications
| Item | Conventional Range |
|---|---|
| Square pipe | 20×20 ~ 200×200mm |
| Rectangular pipe | 20×30 ~ 150×200mm |
| Wall thickness | 1.2-8.0mm (common 1.5-5.0mm) |
| Length | Conventional 6m, customizable |
Product Features
Large cross-section moment of inertia, bending and torsion resistance better than round pipe of the same weight
Galvanized anti-corrosion, flat surface, can be used directly without painting
Easy to cut, weld, and drill, suitable for bolt assembly construction
Main Applications
Steel structure frames and columns, curtain wall keel, equipment racks, photovoltaic bracket purlins, guardrail and fence columns, factory platforms, municipal enclosures, and container and carriage skeletons, etc.