| |
| |
|
- Bearing bar pitches may be 12.5 to 30,32.5,40,60,80,90mm,of which 30mm is recommended.
- Cross bar pitches may be 30 to 170mm,of which 100mm is recommended.
- Sign of the shape of bearing bars.
F - Plain style (may be omitted in the symbol of steel grating)
S - Serrated style
I - I-section style
- Sign of surface treatment
G - Hot galvanizing (may be omitted in the symbol of steel grating)
P - Painted
U - untreated |
 |
|
|
|
|
| |
|
|
|
|
|
