Covers tubes of mild steel and stainless steel of round, oval, square and rectangular section for use in the manufacture of furniture. It does not cover tubes for pressure purposes.
SANS 657-4:2004 history
0000 SANS 657-4-2010
2004SANS 657-4:2004 Steel tubes for non-pressure purposes Part 4: Steel tubes of round, oval, square and rectangular section for furniture