CHS 33.7x3 Tata Steel Hybox · Weight & Dimensions

Tata Steel Hybox · 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 33.7x3 steel profile weighs 2.3 kg/m (1.53 lb/ft). Cross-sectional area: 289.341 mm². Moment of inertia Ix = 3.441 cm⁴, Iy = 3.441 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)	33.7 mm	1.33 in
Weight	2.3 kg/m	1.53 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	289.34 mm²	0.448 in²
Moment of inertia (Ix)	3.44 cm⁴	0.08 in⁴
Moment of inertia (Iy)	3.44 cm⁴	0.08 in⁴
Elastic section modulus (Sx)	2.04 cm³	0.125 in³
Elastic section modulus (Sy)	2.04 cm³	0.125 in³
Plastic section modulus (Zx)	2.84 cm³	0.173 in³
Plastic section modulus (Zy)	2.84 cm³	0.173 in³
Radius of gyration (rx)	1.09 cm	0.429 in
Radius of gyration (ry)	1.09 cm	0.429 in