Steel tubes 21

Metric units Imperial units

Section	Dimensions			Properties
	D	t		I	W_el	A	G
	mm	mm		cm⁴	cm³	cm²/m	kg/m
Steel tubes 21	1626	22.0		3565970	43860	1108.6	870.3

Section	Dimensions			Properties
	D	t		I	W_el	A	G
	in	in		in⁴	in³	in²	lb/ft
Steel tubes 21	64.0	0.866		85672.4	2676.5	171.8	584.8

D	Diameter (external)
t	Thickness
I	Moment of inertia
W_el	Elastic section modulus
A	Cross sectional steel area
G	Mass