... is widly used on construction project, oil project, seaport, power plant, water plant, defense project, chemical factory and so ... and Middle East markers.The metal bar grating commonly used on bridge,refinery ,power plant,Sewage treatment plant and so ... self colour, hot dip galvanized, painted, spray coating 6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar 7StandardChina: YB/T 4001 ...