CHS 88.9x2.65 Gerdau · Weight & Dimensions

Gerdau, tubes · 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 88.9x2.65 steel profile weighs 5.6 kg/m (3.79 lb/ft). Cross-sectional area: 718.05 mm². Moment of inertia Ix = 66.833 cm⁴, Iy = 66.833 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.65 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.6 mm	0.10 in
Diameter (d)	88.9 mm	3.50 in
Weight	5.6 kg/m	3.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	718.05 mm²	1.113 in²
Moment of inertia (Ix)	66.83 cm⁴	1.61 in⁴
Moment of inertia (Iy)	66.83 cm⁴	1.61 in⁴
Elastic section modulus (Sx)	15.04 cm³	0.918 in³
Elastic section modulus (Sy)	15.04 cm³	0.918 in³
Plastic section modulus (Zx)	19.72 cm³	1.203 in³
Plastic section modulus (Zy)	19.72 cm³	1.203 in³
Radius of gyration (rx)	3.05 cm	1.201 in
Radius of gyration (ry)	3.05 cm	1.201 in