... ,505,303 all specifications can be required. though iso 9001 Galvanized steel grating1. type: plain, serrated, 1,press-locked2. FB405/30/100 ... , galvanizedsteel gratingMaterial specification:1,mild steel : ASTM A36,BS4306,JIS G3101 SS4002,Stainless steel SUS 304SUS316Specification of steel grating: Item No.Bearing bar ...