CHS 165.1x3 SAISC · Weight & Dimensions

SAISC, cold-formed sections · 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 165.1x3 steel profile weighs 12.0 kg/m (8.06 lb/ft). Cross-sectional area: 1,527.757 mm². Moment of inertia Ix = 501.971 cm⁴, Iy = 501.971 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3 mm	0.12 in
Diameter (d)	165.1 mm	6.50 in
Weight	12.0 kg/m	8.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,527.76 mm²	2.368 in²
Moment of inertia (Ix)	501.97 cm⁴	12.06 in⁴
Moment of inertia (Iy)	501.97 cm⁴	12.06 in⁴
Elastic section modulus (Sx)	60.81 cm³	3.711 in³
Elastic section modulus (Sy)	60.81 cm³	3.711 in³
Plastic section modulus (Zx)	78.84 cm³	4.811 in³
Plastic section modulus (Zy)	78.84 cm³	4.811 in³
Radius of gyration (rx)	5.73 cm	2.257 in
Radius of gyration (ry)	5.73 cm	2.257 in