... Steel Grating Plate 1. Reliable steel grating supplier 2. Good quality steel grating 3. Easy installation & saving work ti 1.Comprehensive ... ,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm ... )38.1, 50, 50.8, 70, 75, 80, 100, 101.6, 102……The sizes ... I type; cross bar: round type and square twisted type. www.cnstrongstar.com Anping Steel Grating(China)