CHS 88.9x4.75 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 88.9x4.75 steel profile weighs 9.9 kg/m (6.63 lb/ft). Cross-sectional area: 1,255.734 mm². Moment of inertia Ix = 111.506 cm⁴, Iy = 111.506 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.75 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.8 mm	0.19 in
Diameter (d)	88.9 mm	3.50 in
Weight	9.9 kg/m	6.63 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,255.73 mm²	1.946 in²
Moment of inertia (Ix)	111.51 cm⁴	2.68 in⁴
Moment of inertia (Iy)	111.51 cm⁴	2.68 in⁴
Elastic section modulus (Sx)	25.09 cm³	1.531 in³
Elastic section modulus (Sy)	25.09 cm³	1.531 in³
Plastic section modulus (Zx)	33.67 cm³	2.055 in³
Plastic section modulus (Zy)	33.67 cm³	2.055 in³
Radius of gyration (rx)	2.98 cm	1.173 in
Radius of gyration (ry)	2.98 cm	1.173 in