Indiana machine tools, an iso company manufactures straightening machines. These are fabricated out of high quality chill / s.G. Iron / adamite rolls. These straightening machines are offered in 130 mm roll centres to 800mm. Roll centres and ideally suited for all types of sections. These machines have a steel fabricated body and have heavy duty worm gear type screw down mechanism. They are capable to suit joists of up to 500 mm, channels of up to 400 mm and angles of up to 200x200 mm.