Industrial doors and frames are made of high quality cold rolled, galvanized and stainless steel sheets, with thickness 1.5 - 0.7mm. The double bended-double sheets gives the door solid structure with inner support. The high quality stainless steel ball-bearing type hinges gives the door more steady and smooth operation. The galvanized sheets makes the door more resistive to rust and corrosion and can withstand all climatic changes. Steel doors are also available in see through glass.Also doors closer can fix.