Steel grating 1.ISO9001:2000certificate 2.competitive price 3.thickness:0.3-2.5mm 4.bearing bar:25x3,25x4,30x3,30x4,30x5, Steel grating is made by the world first-class equipment,which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance.cross bar is pressed into the bearing bar by high tension resistance weldingring which is controlled by computer.so we ...
