... AS1657-1988 E: Japan: JJS Steel Grating Steel grating specification: Specifications of steel gratingsNoItemDescription1Bearing bar20x5, 25x3, 25x4, ... Oil and grease chemistry, Agriculture husbandry, Horticulture, Steel industry, Waste disposal, Food processing, Aquatic breeding ... : Steel grating offers the following advantages compared with steel grid sheets:Steel grating has light weight, good ...