Related standards
| Steel Grating Standard | Steel Material Standard | Hot-Dip Galvanized Standard |
| China: YB/T4001.1-2007 | China: GB700-2006 | China: GB/T13912-2002 |
| U.S.A: ANSI/NAAMM | U.S.A: ASTM(A36) | U.S.A: ASTM(A123) |
| U.K: BS4592 | U.K: BS4360(43A) | U.K: BS729 |
| Australia: AS1657 | Australia: AS3679 | Australia: AS1650 |
Grating material
Load bar & cross bar made of Q235 which’s similar to American Standard A36. Other materials can also be used, for example: stainless steel and aluminum.
Hot-rolled flat bar, hot-rolled strip or cold-rolled strip silt by slitting shears are available for load bar.
Hot-rolled flat bar, hot-rolled strip or cold-rolled strip silt by slitting shears are available for plain serrated bar.
Tolerance of load bar
Tolerance for the load bar should be in according with the standard of YB/T4001.1-2007.
| Norminal Size(mm) | YB/T4001.1-2007 Tolerance | MBG531-15 Tolerance | |
| Thickness | 3～16 | ＋0.2 －0.4 |
±0.23 |
| Width | 10～50 | ＋0.3 －0.9 |
±0.4(19~44mm) |
| >50～75 | ＋0.4 －1.2 |
±0.6(51~63mm) | |
| >75～100 | ＋0.7 －1.7 |
||
| >100～150 | ＋0.8 －1.8 |
||
Hot-Dip Galvanized coating thickness
Hot-Dip Galvanized coating thickness for the steel grating should be in according with the standard of GB/T13912-2002.
| Norminal Size | GB/T13912-2002 Tolerance | ASTM A123-15 Tolerance | ||
| (mm) | Minimum Local Coating Thickness | Minimum Average Coating Thickness | Minimum Average Coating Thickness | |
| 3 | 55μm | 70μm | 65μm | 459g/m² |
| 4~5 | 55μm | 70μm | 75μm | 530g/m² |
| 6~15 | 70μm | 85μm | 75μm | 530g/m² |
| >16 | 70μm | 85μm | 100μm | 707g/m2 |
