... grating , ISO9001-2000, GRATING SPECIALIST! Mr. David Huang trench bar grating ,Galvanized Gully grating ,inlet grating , ISO9001-2000, GRATING ... in customized shapes per client's requirements.1) Bearing Bar (Load Bar) Specifications (mm): The specification of plain type and ... Huang) 6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar (Mr. David Huang) 7StandardChina: YB/T 4001.1- ...