1.Bearing bar pitch:30,40,60mm 2.Cross bar pitch:50,100mm 3.Plain , ... example:1) Bearing bar pitches may be 12.5, 15 to 30, 40, 60, 80 and 90mm; of which 30and 40mm are ... recommended2) Cross bar pitch may be 30, 38, 50, 76 and 100mm; of which 50 and 100mm ... and secure, wears well, non-sagging,non-dirt, and easy to install 4) Hot galvanizing standard: China GB/T13912-925) Wrapping ...