RHS 320x220x12.7 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 320x220 (México) · Caño estructural 320x220 (Argentina)

The RHS 320x220x12.7 steel profile weighs 99.3 kg/m (66.76 lb/ft), has a depth of 320 mm (12.60 in), flange width 220 mm (8.66 in). Cross-sectional area: 12,655.482 mm². Moment of inertia Ix = 17,580.53 cm⁴, Iy = 9,822.541 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	320 mm	12.60 in
Width (b)	220 mm	8.66 in
Thickness (t)	12.7 mm	0.50 in
Fillet radius (r)	25.4 mm	1.00 in
Weight	99.3 kg/m	66.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,655.48 mm²	19.616 in²
Moment of inertia (Ix)	17,580.53 cm⁴	422.37 in⁴
Moment of inertia (Iy)	9,822.54 cm⁴	235.99 in⁴
Elastic section modulus (Sx)	1,098.78 cm³	67.052 in³
Elastic section modulus (Sy)	892.96 cm³	54.492 in³
Plastic section modulus (Zx)	1,344.24 cm³	82.031 in³
Plastic section modulus (Zy)	1,038.24 cm³	63.357 in³
Radius of gyration (rx)	11.79 cm	4.640 in
Radius of gyration (ry)	8.81 cm	3.468 in