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1). The shape of bearing bar: plain type, serrated type and I-shape type
2). Bearing flat bar spacing can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.
3). Cross bar spacing can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended.
4). Surface treatment: Hot-dip / electro galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.
5). Material: stainless steel, mild steel, iron steel, Q235
6). Tolerance: The allowed deviation of length is ±5mm, and the allowed deviation of width is ±5 mm.
It can be used in the fields of flooring, catwalk, mezzanines/decking, stair tread, fencing, ramp, dock, trench cover, drainage pit cover, maintenance platform, wash rack, ventilation screen, storage rack, suspended ceiling, window and machinery safe guards, factory, workshop, motor rooms, trolley channel, heavy loading area, boiler equipment and heavy equipment area, etc
Plain bar grating specifications:
Item | Description |
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 |
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 |
Twisted Cross Bar Pitch | 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc |
Material Grade | ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400, Mild steel & Low carbon steel, etc |
Surface Treatment | Black, hot dipped galvanized, painted, spray coating |
Grating Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar |
Standard | China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88), UK: BS4592-1987, Australia: AS1657-1985, Germany: DIN24537-1-2006, Japan :J |
A. China: YB/T4001-1998
B. USA: ANSI/NAAMM (MBG 531-88)
C. UK: BS4592-1987
D. Australia: AS1657-1988
E: Japan: JIS
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