Steel grating

Steel grating by the grid load on certain flat steel bar and spacing Affairs with the high pressure：
1.Surface Treatment: Hot dip galvanizing, paint or no coating
2.Surface Shape: Planform, tooth shape and I shape(According to requirement made different protective treatment).
3.Classification:Welded steel grating, standard pressure lock grating, dense grating, ditch cover and ladders
4.Quality Standard:
(1)Steel Grating Standard: China YB/T4001-1998
(2)America ANSI/NAAMM (MBG531-88)
(3)Britain BS4592-1987
(4)Australia AS1657-1992
5.Steel Standard:
(1)China GB700-88
(2)USA: ASTM (A36)
(3)UK: BS4306 (43A)
(4)Australia: AS1657-1985
(5)Japan: JJS

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