RHS 180x120x7.1 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 180x120 (México) · Caño estructural 180x120 (Argentina)

The RHS 180x120x7.1 steel profile weighs 30.8 kg/m (20.72 lb/ft), has a depth of 180 mm (7.09 in), flange width 120 mm (4.72 in). Cross-sectional area: 3,928.543 mm². Moment of inertia Ix = 1,711.558 cm⁴, Iy = 911.091 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	120 mm	4.72 in
Thickness (t)	7.1 mm	0.28 in
Fillet radius (r)	14.2 mm	0.56 in
Weight	30.8 kg/m	20.72 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,928.54 mm²	6.089 in²
Moment of inertia (Ix)	1,711.56 cm⁴	41.12 in⁴
Moment of inertia (Iy)	911.09 cm⁴	21.89 in⁴
Elastic section modulus (Sx)	190.17 cm³	11.605 in³
Elastic section modulus (Sy)	151.85 cm³	9.266 in³
Plastic section modulus (Zx)	233.39 cm³	14.242 in³
Plastic section modulus (Zy)	176.41 cm³	10.765 in³
Radius of gyration (rx)	6.6 cm	2.599 in
Radius of gyration (ry)	4.82 cm	1.896 in