CHS 355.6x8 · Weight & Dimensions

EN — Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 355.6x8 steel profile weighs 68.6 kg/m (46.10 lb/ft). Cross-sectional area: 8,736.1 mm². Moment of inertia Ix = 13,201.37 cm⁴, Iy = 13,201.37 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	355.6 mm	14.00 in
Weight	68.6 kg/m	46.10 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,736.1 mm²	13.541 in²
Moment of inertia (Ix)	13,201.37 cm⁴	317.16 in⁴
Moment of inertia (Iy)	13,201.37 cm⁴	317.16 in⁴
Elastic section modulus (Sx)	742.48 cm³	45.309 in³
Elastic section modulus (Sy)	742.48 cm³	45.309 in³
Plastic section modulus (Zx)	966.78 cm³	58.997 in³
Plastic section modulus (Zy)	966.78 cm³	58.997 in³
Radius of gyration (rx)	12.29 cm	4.839 in
Radius of gyration (ry)	12.29 cm	4.839 in