Square steel: is solid, bar. Different from square tubes, hollow ones belong to pipes. It is a name for a square pipe, that is, a steel pipe with equal side lengths.
It is made of strip steel that has been processed and rolled. Common specifications and implementation standards are as follows: 500*500*8~25 square steel pipe 140*140*4~14 square steel pipe 135*135*4~14 square steel pipe 130*130*4~12 square steel pipe 450*450*8~25 Square steel pipe 120*120*4~12 square steel pipe 400*400*8~25 square steel pipe 110*110*4~12 square steel pipe
The commonly used structural round bars are used for different purposes according to their specifications.
Small ones are used for decorative components, assembled roof trusses, supporting components, grid frames and pipe trusses, etc., while large ones can be used for concrete-filled steel tubular steel columns of heavy steel workshops, large stadium pipe trusses, etc.; round steel Another main use is process piping, but generally has special material and anti-corrosion requirements.
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