Quality Standard
Steel Grating standards
Number of bearing bars
Nominal width(mm)
Bearing bar centers(30mm)
Bearing bar centers(40mm)
Bearing bar centers(60mm)
3
125
4
95
125
185
5
125
165
245
6
155
205
305
7
185
245
365
8
215
285
425
9
245
325
485
10
275
365
545
11
305
405
605
12
335
445
665
13
365
485
725
14
395
525
785
15
425
565
845
16
455
605
905
17
485
645
965
18
515
685
1025
19
545
725
20
575
765
21
605
805
22
635
845
23
665
885
24
695
925
25
725
965
26
755
1005
27
785
28
815
29
845
30
875
31
905
32
935
33
965
34
995
