... to 90 x 7mm 3)Bearing bar pitch: 30, 40, 60, 12.5 Steel grating/ Stainless steel grating/ plain steel grating/ galvanized ... , 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 ... .2. Bearing Bar Pitch (center to center): 15, 30, 40, 60, 80, 90mm etc, or according to client's request and ...