factory hot sale catwalk steel grating

factory hot sale catwalk steel grating   1) Bearing Bar (Load Bar) Specifications (mm):   The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10;the specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.       2) Bearing Bar Pitch (center to center):   12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm etc, also be according to client's requirement and 30, 40, 60mm are recommended,       America standard is available <1'' x 3/16'', 1 1/4'' x 3/16'', 1-1/2'' x 3/16'', 1'' x 1/4'', 1-1/4'' x 1/4'', 1 1/2'' x 1/4''(19-w-4),(19-w-2) and so on.>   3) Cross Bar Pitch (center to center):   38, 50, 76, 100, 101.6mm etc, also be according to client's requirement and 50, 100mm 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/T4001-1998   B) USA: ANSI/NAAMM (MBG531-88)   C) UK: BS4592-1987   D) Australia: AS1657-1985        

No	Item	Description
1	Bearing bar	25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm
2	Bear bar pitch	12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16",  1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc.
3	Cross bar pitch	38,50,76,100,101.6mm
4	Material	Q235,A36,SS304
5	Surface treatment	Black, hot dipped galvanising, paint
6	Standard	China: YB/T 4001.1-2007
		USA: ANSI/NAAMM(MBG531-88)
		UK: BS4592-1987
		Australia: AS1657-1985

    steel grating application: Galvanized steel grating are widely used by various plants such as electric power, petroleum, chemical industry, metallurgy industry, machinery industry, shipbuilding, harbor, oceanographic engineering, building, paper mills, cement plant, medicine, spinning and weaving, foodstuff factory, transportation, municipal administration, parking lot, etc.