| Nominal
size |
L1 |
B1 |
L2 |
B2 |
L3 |
B3 |
S |
S1 |
H |
Fastener |
Weight |
| D. |
Qty |
| 800×400 |
820 |
420 |
898 |
548 |
948 |
548 |
12 |
10 |
460 |
M20 |
24 |
83.4 |
| 14 |
12 |
97.0 |
| 16 |
14 |
110.6 |
| 18 |
16 |
124.2 |
| 20 |
18 |
137.9 |
| 22 |
20 |
151.5 |
| 24 |
22 |
165.2 |
Tag example
The nominal size is 600mm×400mm, the thickness of the cover is 10mm, the cover plate is connected with the seat bolts, the raised oval shape manhole cover marked：
Manhole cover CB/T 4392-2014 AA 600×450-10-L
The nominal size is 800mm×600mm, the thickness of the cover is 16mm, the cover plate and seat ring are welded with bottom plate, can be inverted shell handle，the flush oval shape manhole cover with coaming shield marked：
Manhole cover CB/T 4392-2014 CA 800×600-16-DK
