HDG Floor Grating And Grating Stair Tread For Offshore

Hot dip galvanized floor grating and hot dip galvanized grating stair tread for offshore application.

Hot dip galvanized floor grating (width × length), mm: 1005 × 600 LB.
Hot dip galvanized floor grating (width × length), mm: 1005 × 900 LB.
Hot dip galvanized floor grating (width × length), mm: 1005 × 1200 LB.
Hot dip galvanized grating stair tread 215 × 600 mm with accessories.
Hot dip galvanized grating stair tread 245 × 1000 mm with accessories.

Steel Bar Grating Specification:

No.	Item	Detailed Description
1	Bearing Bar	25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc; I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc
1	Bearing Bar	US standard: 1' ' x3/16' ' , 1 1/4' ' x3/16' ' , 1 1/2' ' x3/16' ' , 1' ' x1/4' ' , 1 1/4' ' x1/4' ' , 1 1/2' ' x1/4' ' , 1' ' x1/8' ' , 1 1/4' ' x1/8' ' , 1 1/2' ' x1/8' ' etc
2	Bearing Pitch	12.5, 15, 20, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc
2	Bearing Pitch	US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc
3	Cross Bar Pitch	38.1, 40 50, 60, 76, 80, 100, 101.6, 120mm, 2' ' & 4' ' etc
4	Steel Grade	ASTM A36, A1011, A569, Q235, S235JR, S275JR, SS304, Mild steel & Low carbon steel, etc
5	Surface Treatment	Black, self colour, hot dip galvanized, painted, spray coating
6	Grating Style	Plain / Smooth, Serrated /teeth, I bar, serrated I bar
7	Grating Standard	China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88),
7	Grating Standard	UK: BS4592-1987, Australia: AS1657-1985, Japan: JIS

Due to the tropical and marine environmental conditions and working conditions of offshore objectives, below two items must be considered.

The bar gratings have strong non-slip characteristics due to oily and slip surface of floors, walkways on offshore objectives during application.
The gratings must be enhanced anti-corrosion characteristics due to high corrosive conditions on offshore objectives.

Fig. 1: Floor Grating

Technical specs of "Hot dip galvanized floor grating":

The load bearing bars are produced from steel which conforms to the following equivalent standards: AS3679 Grade 250, BS4360 Grade 43A and ASTM A36 or equivalent.
Serrated surface (serrated bar), banded with the same size flat bar (end banding type), hot dip galvanized.
Load bar size, cross rod size, load bar pitch, cross rod pitch is required as per Fig. 1 above.
Entire surface area is protected by a uniform layer of zinc. Hop dip galvanizing conforms to the following equivalent standards: AS 1650, BS729, ASTM A123 and GB2518. The minimum average hot dip galvanized coating is 610 gms/sq metre.

Fig. 2: Stair Tread

Technical specs of "Hot dip galvanized grating stair tread":

The load bearing bars are produced from steel which conforms to the following equivalent standards: AS3679 Grade 250, BS4360 Grade 43A and ASTM A36 or equivalent.
Serrated surface (serrated bar), banded with the same size flat bar (end banding type), hot dip galvanized.
Load bar size, cross rod size, load bar pitch, cross rod pitch is required as per Fig. 1 above.
Entire surface area is protected by a uniform layer of zinc. Hop dip galvanizing conforms to the following equivalent standards: AS 1650, BS7291_ASIM-A43S and GB2518. The minimum average hot dip galvanized coating is 610gms/sq metre
Bolted fixing, Holed end plat Floor plate nosing (see Fig.2 above).

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