CHS 70x6 GOST · Weight & Dimensions

GOST, 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 70x6 steel profile weighs 9.5 kg/m (6.36 lb/ft). Cross-sectional area: 1,206.372 mm². Moment of inertia Ix = 62.309 cm⁴, Iy = 62.309 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6 mm	0.24 in
Diameter (d)	70 mm	2.76 in
Weight	9.5 kg/m	6.36 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,206.37 mm²	1.870 in²
Moment of inertia (Ix)	62.31 cm⁴	1.50 in⁴
Moment of inertia (Iy)	62.31 cm⁴	1.50 in⁴
Elastic section modulus (Sx)	17.8 cm³	1.086 in³
Elastic section modulus (Sy)	17.8 cm³	1.086 in³
Plastic section modulus (Zx)	24.65 cm³	1.504 in³
Plastic section modulus (Zy)	24.65 cm³	1.504 in³
Radius of gyration (rx)	2.27 cm	0.895 in
Radius of gyration (ry)	2.27 cm	0.895 in