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Welded Steel Bar Grating is the most popular of all grating types due to its strength, cost-efficient production and ease of installation. Universally used in most general industrial plants as well as commercial buildings, it has wide applications as walkways, platforms, safety barriers, drainage covers and ventilation grates.
Surface treatment:Hot-dipped-galvanized ,electro galvanized , black
8) normal specification,
No
Item
Description
1
Bearing bar
25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm
2
Bear bar pitch
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc.
3
Cross bar pitch
38,50,76,100,101.6mm
4
Material
Q235,A36,SS304
5
Surface treatment
Black, hot dipped galvanising, paint
6
Standard
China: YB/T 4001.1-2007
USA: ANSI/NAAMM(MBG531-88) UK: BS4592-1987 Australia: AS1657-1985 
Trademark: Puersen
Origin: Hebei, China
HS Code: 730890000