Dorpad door and window steel box profiles are manufactured in three series—507, 508, and 509—with thicknesses ranging from 0.7 to 2 mm. These products comply with Iranian National Standards 7335 and 7338 and offer high manufacturing quality and consistent dimensional accuracy. Due to their precise dimensions, good weldability, and excellent formability, these profiles are widely used in the production of metal doors and windows for residential, commercial, and industrial construction projects.