STEEL GRATING FOR PREVENTING CORROSION AND TRANSFORMATION CAUSED BY WELDING AND IMPROVING PRODUCTIVITY

摘要

PURPOSE: A steel grating is provided to prevent the corrosion and transformation caused by welding, to improve productivity by shortening the time required for fastening and to secure the stable walking state by securing enough walking space to keep the enough contact area with the outside. CONSTITUTION: The steel grating(100) contains: many bearing bars(120) arranged in a pair of a major-axis plate(40) and a minor-axis plate(50) provided with key grooves(125) retreated from the upper part of each bearing bar(120); and many cross bar(130) arranged at a right angle to the bearing bars(120) forming a latticed structure together with bearing bars(120) and provided with fitting projections(135) projected outward to be fixed to the key grooves(125) of the bearing bar(120).