Hollow Structural Sections: CHS, RHS and SHS

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).

chs – circular hollow sections: for aesthetics and strength

circular hollow sections (chs) was the first form of hollow section. commonly used in a wide range of structural, mechanical and construction areas.

from an architectural perspective the constant clean lines provide a very smooth surface appearance which is often employed in many high-profile applications. the lack of protruding edges on these fully closed sections assists in reducing the effects of exposure to the elements and also in increased cleanliness from dust and other material build-up.

rhs – rectangular hollow sections: for economy and strength

rectangular hollow sections (rhs) is a popular choice for mechanical, structural and construction applications. this is due to the flat surface resulting in a structural solution that is more economical for joining and various other types of fabrication works.

due to the rectangular shape of this type of hollow section, when joining to other flat surfaces sections only need to be straight cut. rhs requires minimal edge preparation for welding or joining.

rhs can also be used for architectural aesthetics due to possessing clean lines alongside structural strength.

shs – square hollow sections: for symmetry, balance strength and aesthetics

square hollow sections (shs) is another popular type of structural steel tube that’s kind of a middle-man between rhs and chs in terms of attributes, appearance and structural behavior.

shs features a flat surface that’s also economical for joining and welding, with clean lines and minimal edge preparation required.

shs also features attributes of chs, with its symmetrical appearance, formed in equal-sided square hollow sections – as opposed to circular sections.

shs provides an ideal balance between strength, functionality and aesthetic appearance for a multitude of applications that require all three aspects.

materials:

astm a312: tp304, tp304l, tp316, tp316l

en 10210:s235jrh,s355j2h,s355nh

en 10219:s235-s550

astm a500:gr.b

astm a501:gr.b

standard for hollow sections

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if you’d prefer to discuss your steel hollow section requirement please email us at – sales@bestarpipe.com for competitive quote on any quantity or specification required.