A500GRB structural tube is a cold-rolled seamless rectangular steel tube welded by welding rods. It meets tensile, bending, end-face extrusion, and other engineering requirements and is widely used in building and mechanical structures.
A500GRB Chemical Composition and Mechanical Properties
| Property | Requirement/Value |
|---|---|
| Chemical Composition (wt%) | |
| Carbon (C) | ≤ 0.26% |
| Manganese (Mn) | ≤ 1.35% |
| Phosphorus (P) | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% |
| Copper (Cu) | ≥ 0.20% (when specified) |
| Mechanical Properties | |
| Min. Yield Strength | ≥ 350 MPa (50 ksi) |
| Min. Tensile Strength | ≥ 450 MPa (65 ksi) |
| Elongation (50mm gauge) | ≥ 23% |
Characteristics of A500 GRB Square Tubes
- Strength and Stability: A500 GRB square tubes conforming to the A500 standard possess high yield strength and tensile strength. This means they can withstand large loads without easily deforming or breaking. This high strength makes them ideal as load-bearing components in building structures, such as columns and beams.
- Excellent Section Performance: The square cross-section of A500 GRB results in similar moments of inertia in all directions, meaning it offers balanced resistance to bending in different directions. Compared to some open-section steel sections (such as I-beams), square tubes also have better torsional stiffness (resistance to torsion).
- Neat Appearance and Easy Processing: A500 GRB square tubes have simple lines and sharp edges, making them visually appealing and sometimes used directly in exposed structural designs. The smooth surface facilitates subsequent cutting, welding, drilling, painting, and other processing.
- Economic efficiency: Under the premise of achieving the same structural performance requirements, using A500 GRB square tubing can sometimes save more material than using solid steel, thereby reducing the overall weight and material cost of the structure to a certain extent. This combination of "lightweight" and high strength makes it economical.
A500 GRB square tubing has a wide range of applications.
- Building structures: This is its primary application area. A500 GRB square tubing is used in everything from large steel frame structures in industrial plants and supporting columns and roof beams in warehouses to space frame structures in commercial buildings such as shopping malls and stadiums. It provides a robust framework for the main structure.
- Machinery Manufacturing and Equipment Frames: Many heavy machinery, automated production lines, conveyors, and agricultural machinery require sturdy bases and frames. Due to its stability and strength, A500 GRB square tubing is frequently used in the support structures of these devices.
- Bridge construction: In some small and medium-sized bridges or auxiliary structures of bridges, A500GRB square tubes can also be used as load-bearing components or guardrail supports.
- Other applications: A500 GRB square tubing is also commonly used in the manufacture of exhibition stands, shelves, greenhouse frames, and the keel of simple houses. In these applications, its neat appearance and ease of assembly are fully utilized.
A500 GRB Square tube factory
