SINOSTEEL Bar Grating, manufactured by the subsidiary company of SINOSTEEL Corporation.

1.Bar Grating Standardizations:

Countries	National Standards for Grating	Materials	Galvanizing Standards
China	YB/T 4001.1-2007	GB 700-88	GB/T13912-2002
America	ANSI/NAAMM(MBG531-00)	ASTM(A36)	ASTM(A123)
Britain	BS4592-1995	BS4360(43A )	BS729
Australia	AS1657-1992	AS3679	AS1650

2.Bearing Bar Sizes: 1"x1/8",1-1/4"x1/8",1-1/4"x3/16",1-1/2"x3/16",2"x3/16",2"x1/4".

3.Bearing Bar Pitches:12.5mm,15mm,24mm,25mm,30mm,30.16mm(1-3/16"),32.5mm,34.33mm,35.33mm,38mm,40mm,41.25mm,50mm,60mm

4.Cross Bar Pitches: 38.1mm, 50mm, 75mm, and 100mm,101.6mm(4").

5.Standard Grating Panels Sizes: 3'x12', 3'x20', 3'x24'.

6.Surface Treatment: Bare, Paint and Hot Dipped Galvanized.

7.There are three kinds of steel gratings distinguished by different bearing bar types.

The respective of features are as follows:

Plain:One of the most widely used gratings,available for flooring,sidewalk,dranage pit cover,stair tread,etc.Serrated:Better non-skid property & safety compared with plain grating.I-Shape:lighter,more economical and practical compared with plain grating.