... ,etc2.Technique:steel grating is made by pressing and welding,surface treatment should be untreated,painted or ... grille, stereo, road parking lot, organs, schools, factories and enterprises, stadiums, garden villas fences, but also can be ... 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etcUS standard: 19-w-4, 15-w ... , Australia: AS1657-1992, Japan:JIS Galvanized and Painted Steel Grating with standard size