CHS (Circular Steel Frames) are seamless or welded steel tubes with a circular cross-section. They are commonly used in truss systems, space frames, and offshore structures due to their excellent torsional resistance and uniform strength in all directions.
SHS (Structural Steel Frames) are similar to RHS (Circular Steel Frames), but with a square cross-section. They are commonly used in structural frames, truss systems, and support columns, offering excellent load-bearing capacity and ease of manufacture.
SHS V.S CHS Tube
| Feature | SHS (Square Hollow Section) | CHS (Circular Hollow Section) |
|---|---|---|
| Cross-sectional shape | Square (all sides equal) | Circular (uniform radius) |
| Bending performance | Isotropic (consistent strength in all directions) Prone to stress concentration at corners |
Uniform bending (no stress concentration points) Higher torsional resistance |
| Compressive performance | Good (suitable for axial loads) | Excellent (symmetric section, efficient load distribution) |
| Connection convenience | High (easy to bolt or weld on flat surfaces, simple alignment) | Medium-low (requires flanges or welded rings, complex directional connection) |
| Common manufacturing standards | ASTM A500, EN 10219, JIS G3466 | ASTM A500, EN 10219, JIS G3466 |
| Typical applications | Building frame beams, structural joints, machinery bases | Load-bearing columns, pipeline systems, pressure vessels, bridge supports |
SS400/A500/S275JR/S355JR SHS and CHS Tube factory
