... lot, organs, schools, factories and enterprises, stadiums, garden villas fences, but also can be used as the residence outside the ... steel grating L-- pressure-locked C-- socket-weldingBearing bar centers:15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm ... recommended.Cross bar centers:any greater than 30mm is ok. with 50, 100mm recommended.Surface treatment:G - galvanizedP - paintedU - untreatedGrating ...