Quality Standard
|
standard |
Steel grating standard |
Steel product standard |
Hot galvanizing standard |
| China |
YB/T4001.1-2007 |
GB700-88 |
GB/T13912 |
|
U.S.A |
ANSI/NAAMM(MBG531-88) |
ASTM(A36) |
ASTM(A123) |
|
U.K |
BS4592-1987 |
BS4360(43A) |
BS729 |