CHS 33.7x4 Tata Steel · Weight & Dimensions

Tata Steel, 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 33.7x4 steel profile weighs 2.9 kg/m (1.97 lb/ft). Cross-sectional area: 373.221 mm². Moment of inertia Ix = 4.19 cm⁴, Iy = 4.19 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	33.7 mm	1.33 in
Weight	2.9 kg/m	1.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	373.22 mm²	0.578 in²
Moment of inertia (Ix)	4.19 cm⁴	0.10 in⁴
Moment of inertia (Iy)	4.19 cm⁴	0.10 in⁴
Elastic section modulus (Sx)	2.49 cm³	0.152 in³
Elastic section modulus (Sy)	2.49 cm³	0.152 in³
Plastic section modulus (Zx)	3.55 cm³	0.217 in³
Plastic section modulus (Zy)	3.55 cm³	0.217 in³
Radius of gyration (rx)	1.06 cm	0.417 in
Radius of gyration (ry)	1.06 cm	0.417 in