Material Quality

A500 Grade B =  A500 Grade B is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in square and rectangular shapes. It comes in Grades A, B and C.

ASTM A513  =  A513  is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing. Predominantly found in round tubing, with an excellent combination of strength, hardness and toughness, it can also be found in square and rectangular shapes.