hot dipped galvanizing steel tree grating

We produce three kinds of steel gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard steel grating and in customized shapes per client's requirements.
 
 
1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is *0 x 3 to **0 x *0;the specification of I-section type is *5 x 5 x 3, *2 x 5 x 3, *8 x 5 x 3, *0 x 5 x 3, *0 x 5 x 3, *0 x 7 x 4, *5 x 7 x 4, *0 x 7 x 4, *5 x 7 x 4, *0 x 7 x 4, *5 x 7 x 4, etc.
 
2) Bearing Bar Pitch (center to center):
*2.5, *5,*5, *0, *0.*6, *2.5, *4, *0, *1.*5, *5, *0, *0, *0.*2, *0, **0 mm etc, also be according to client's requirement and *0, *0, *0mm are recommended,
 
America standard is available <1'' x 3/*6'', 1 1/4'' x 3/*6'', **1/2'' x 3/*6'', 1'' x 1/4'', **1/4'' x 1/4'', 1 1/2'' x 1/4''(**-w*4),(**-w*2) and so on.>
 
3) Cross Bar Pitch (center to center):
*8, *0, *6, **0, **1.6mm etc, also be according to client's requirement and *0, **0mm are recommended, America standard is available.
 
4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel
 
 
5) Surface Treatment:
Untreated, Painting or Hot dip Galvanizing
 
 
6) Steel grating standards:
A) China: YB/T********8
B) USA: ANSI/NAAMM (MBG*****8)
C) UK: BS********7
D) Australia: AS********5

Type	Welded steel grating, pressure-locked, socket-welding
Steel flat size	*0×3,*5×3,*5×5,*0×3,*0×4,*0×5,*2×3,*2×5……*5×5mm
Beraing bar pitch	*2.5,*5,*0,*5,*0,*5,*0,*0mm
Cross bar pitch	*8,*0,*0,**0mm
material	Low carbon steel, stainless steel, aluminium
Surface treatment	Untreated, hot galvanized, painted
Standards	China: YB/T ***1.*****7 USA: ANSI/NAAMM(MBG*****8) UK: BS********7 Australia: AS ********5