2) Surface Treatment:
Hot dip Galvanizing ( GB/T13912,ASTM(A123),BS729 )
3) Steel grating standards:
A) China: YB/T4001
B) USA: ANSI/NAAMM (MBG531)
C) UK: BS4592
D) Australia: AS1657
E) Japan: JJS.
If you are interested in our products please kindly send us all necessary(including specification, dimension, draft or drawing), and then we will quote the best price for you ASAP.