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A Hollow Structural Section, or HSS, is a type of metal with a hollow tubular section. These sections can be circular (CHS), square (SHS) or rectangular (RHS).
Hollow Structural Sections, especially RHS steel is commonly used in welded steel frames while SHS and CHS are more often used in columns. Hollow Steel Sections are also commonly used as beams. The flat square surfaces of RHS has the ability to ease construction, and they are sometimes preferred for architectural aesthetics in exposed structures, but circular Hollow Structural Sections are becoming more popular in exposed structures for the same reasons.
Following the introduction of CHS, RHS have also become very popular in many forms of construction and other structural & mechanical applications. This has been greatly assisted by the section’s inherent flat surfaces making it more economical for joining and other fabrication processes. In this instance, and unlike CHS, the sections only need to be straight-cut (when joining to other flat surfaces) instead of profile cut (e.g. when preparing a CHS end or when joining to curved surfaces). Minimal edge preparation is required for joining and welding RHS.
A Hollow Structural Section, or HSS, is a type of metal with a hollow tubular section. These sections can be circular (CHS), square (SHS) or rectangular (RHS).
Hollow Structural Sections, especially RHS steel is commonly used in welded steel frames while SHS and CHS are more often used in columns. Hollow Steel Sections are also commonly used as beams. The flat square surfaces of RHS has the ability to ease construction, and they are sometimes preferred for architectural aesthetics in exposed structures, but circular Hollow Structural Sections are becoming more popular in exposed structures for the same reasons.
Following the introduction of CHS, RHS have also become very popular in many forms of construction and other structural & mechanical applications. This has been greatly assisted by the section’s inherent flat surfaces making it more economical for joining and other fabrication processes. In this instance, and unlike CHS, the sections only need to be straight-cut (when joining to other flat surfaces) instead of profile cut (e.g. when preparing a CHS end or when joining to curved surfaces). Minimal edge preparation is required for joining and welding RHS.