... Q235 low carbon steel welding load flat steel and bars with certain distances.It goes through cutting ,opening ,edging and ... on.Our product of steel grating products is in compliance with the People's Republic of China steel standard production standards ... , painted, spray coating 6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar 7StandardChina: YB/T 4001.1-2007, USA: ANSI/NAAMM ...