Description steel grating
steel grating, also called smooth surface grating, is a type of grating made of plain steel bars. The smooth surface contrast with serrated steel grating, which has a serrated surface. plain steel grating is the most widely used grating type, which is used in almost all of the applications.
Plain steel grating can be made of carbon steel bar, aluminum steel bars and stainless steel bars. Cross bars of plain steel grating can be crimped bars, which are known as riveted steel gratings, flat square bars which are the press-locked gratings. The round bars is welded to the bearing bar is welded steel grating and the bars are placed into the pre-holes on the bearing bars to form the swage-locked grating.
Galvanized forge welded steel grating specifications
| Item | Description |
| Bearing bar | 25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm |
| 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. |
| Cross bar pitch | 38,50,76,100,101.6mm |
| Material | Q235,A36,SS304 |
| Surface treatment | Black, hot dipped galvanising, paint |
| Standard | China: YB/T 4001.1-2007 |
| USA: ANSI/NAAMM(MBG531-88) | |
| UK: BS4592-1987 | |
| Australia: AS1657-1985 |
