... made of the grating with the span bearing capacity and checked plate with the sealed surface . Widely used ... -locked C-- socket-weldingBearing bar centers15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm ... Cross bar centersany greater than 30mm is ok. with 50, 100mm recommended. Surface treatmentG-hot-dip ... grating is the most commonly used in projects with American, Australian, Japan standards are available. ...