RHS 220x160x6.4 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 220x160 cal 3 (México) · Caño estructural 220x160 (Argentina)

The RHS 220x160x6.4 steel profile weighs 36.1 kg/m (24.24 lb/ft), has a depth of 220 mm (8.66 in), flange width 160 mm (6.30 in). Cross-sectional area: 4,594.679 mm². Moment of inertia Ix = 3,160.73 cm⁴, Iy = 1,936.665 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	220 mm	8.66 in
Width (b)	160 mm	6.30 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	36.1 kg/m	24.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,594.68 mm²	7.122 in²
Moment of inertia (Ix)	3,160.73 cm⁴	75.94 in⁴
Moment of inertia (Iy)	1,936.67 cm⁴	46.53 in⁴
Elastic section modulus (Sx)	287.34 cm³	17.535 in³
Elastic section modulus (Sy)	242.08 cm³	14.773 in³
Plastic section modulus (Zx)	344.63 cm³	21.031 in³
Plastic section modulus (Zy)	277.29 cm³	16.922 in³
Radius of gyration (rx)	8.29 cm	3.265 in
Radius of gyration (ry)	6.49 cm	2.556 in