STEEL GRATING :
steel grating can be classified into two styles by type of its bearing bars,namely,plain style and serrated style ,according to the upper edges of bearing bars,form more than 200 varieties on the basis of the sizes and pitches of bearing bars and pitches of bearing bars and the pitches of cross bars,and surface-protective treatment can be made in light of different environments .
advantage:
steel grating have many advantages,such as light weight ,high strength,great load-bearing capacity,being economical of materials,ventilation and light admission ,modern fashion and attractive appearance,anti-slip and safety,easy cleaning and installation ,durability.
steel grating specification
No. | Item | Description
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1 | Bearing Bar | 25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'', 1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc
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2 | Bearing Bar Pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.
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3 | Twisted Cross Bar Pitch | 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc
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4 | Material Grade | ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400, Mild steel & Low carbon steel, etc
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5 | Surface Treatment | Black, self colour, hot dip galvanized, painted, spray coating
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6 | Grating Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar
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7 | Standard | China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88), UK: BS4592-1987, Australia: AS1657-1985, Germany: DIN24537-1-2006, Japan: JIS |
