... ,paper mill,cement mills,medicine plants and foodstuff factories,for uses of gangways and platfoms for pump rooms and engine rooms in ... type and dimention 2.applicable steel equipment 3.excellent quality of steel grating 4.reasonable price1)Bearing bar pitches may be ... ,15,20,22,25,30,34,40,60,80and 90mm,of which 20,30and 40mm are recommended.2)Cross bar pitches ...