anti slip bar grating 1>12 years factory 2>plain grating ,serrated ... more kinds are OK 4>Strong structur Specifications of round bar grating paint steel grating12 years factoryplain grating ,serrated, press ... clients requirement and 30,40,60mm are recommended4. Cross bar picth:38,50,76,100mm,also be according to ... 7. Surface treatment: untreated, painting or hot dip galvanizing. anti slip bar grating