... center to center of the two adjacent bearing bars.3,Cross bar-The connecting bars,made from twisted ... , 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", ... 1 1/4"x3/16", 1 1/2"x3/16 ... ", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc.3Cross bar pitch38, ... : AS1657-1985 41)anti skid steel grating supplier/ss steel grating (10 years factory)