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Steel Hollow Sections: What are CHS, RHS and SHS?

Steel

hollow sections, also known as structural steel pipes and hollow structural sections (HSS), are a type of steel that forms hollow tubular sections

Steel hollow sections are commonly used to weld frames, columns and beams, offering a variety of benefits for a range of construction and mechanical applications

What are RHS, CHS and SHS?

Steel hollow profiles (structural steel pipes) are divided into three main types RHS (rectangular hollow profiles), SHS (square hollow profiles) and CHS (circular hollow profiles). Each type of hollow section has its own properties for a specific purpose

CHS – Circular Hollow Sections: Aesthetics and Strength

Circular hollow profiles (CHS) are the first form of hollow profiles. Widely used in structural, mechanical and architectural fields

CHS's clean, consistent lines without any protruding edges and smoothness make it a popular architectural choice for aesthetic appearance in a variety of applications

RHS - Rectangular Hollow Sections: Economy and Strength

Rectangular Hollow Sections (RHS) are a popular choice for mechanical, structural and architectural applications. This is due to flat surfaces resulting in structural solutions that are more economical for joining and various other types of fabrication work

Due to the rectangular shape of these hollow profiles, when connecting with other flat profiles, only straight cuts are required. RHS requires minimal edge preparation for welding or joining

RHS can also be used for architectural aesthetics due to its clean lines and structural strength

SHS – Square Hollow Section: For symmetry, balanced strength and aesthetics

Square Hollow Section (SHS) is another popular type of structural steel pipe that acts as a middleman between RHS and CHS in terms of properties, appearance and structural behavior

SHS has a flat surface, is also economical for joining and welding, has clean lines and requires minimal edge preparation

SHS also has the properties of CHS, with a symmetrical appearance, formed from an equilateral square hollow section - not a circular section

SHS provides the ideal balance of strength, functionality and aesthetic appearance for a wide variety of applications that require all three

We offer a wide range of cold-formed steel hollow sections: RHS. CHS and SHS available in various sizes, lengths and grades

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