... etc. 1) Steel grating: Bearing bar size 32×5mm, bearing bar pitch 90mm, cross bar pitch 400mm and 100mm.Other kinds ... treatment.TypeWelded steel grating, pressure-locked, socket-welding Steel flat size20×3,25×3,25×5,30×3,30× ... ,30×5,32×3,32×5……45×5mmBeraing bar pitch12.5,15,20,25,30,35,40,50mmCross ... bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, ...