Complaint
| Load Bearing Flat Bar Size | Thickness≥3mm, depth 19mm |
| 19x3,19x5,20x3,20x5,25x3,25x4,25x4.5,25x4.7,25x5........40x6,40x8 | |
| Pitch of Load bearding flat bars (mm) | 12.5,15,20,30,30.6,32.5,34,34.8,35.3,40,60,80.... |
| Pitch of cross bars(mm) | 38.1,50,50.8,70,75,80,99,100,101.6,102...... |
Steel Gratiing Standard
| Country | Steel grating standard | steel material standard | Hot galbanizing standard |
| China | YB/T 4001-1998 | GB 700-88 | GB/T 13912-2002 |
| USA | ANSI/NAAMM(MBG531-88) | ASTM(A36) | ASTM(A123) |
| England | BS 4592-1987 | BS 4360(43A) | BS 729 |
| Australia | AS 1657-1992 | AS 3679 | AS 1650 |
Steel Grating More Detailed Information
| No. | Item | Description |
| 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 | ||
| 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 | ||
| 3 | Twisted Cross Bar Pitch | 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2''&4'' etc |
| 4 | Material Grade | ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400 |
| Mild steel & Low carbon steel, etc | ||
| 5 | Surface Treatment | Black, self color, hot dip galvanized, painted, spray coating |
| 6 | Grating Style | Plain / Smooth, Serrated / teeth, I bar, serrated I bar |
