In continuation with my earlier posts self would like to post unit weight of square hollow as per JIS G 3466 standard. Available sizes are varies from 50 mm to 550mm and thickness varies from 1.6mm to 22mm.
JIS G 3466 (2006) "Carbon steel square and rectangular tubes for general structure", where JIS is abbreviation for JAPANESE INDUSTRIAL STANDARDS
For More Details about different type of Steel Section please refer my earlier post Click Here Steel Sections
For More Details about Hollow Steel Section please refer my earlier post Click HSS
For More Details about Unit Weight of Square Hollow Section please refer my earlier post
As per European Standard Click EN 10219
As per American Standard Click ASTM A 500