| Customization: | Available |
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| After-sales Service: | Installation Guide |
| Warranty: | 5 Years |
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Galvanized grating, also called galvanized steel grating or galvanized steel bar grating, refers to the steel bar grating made of mild carbon steel through hot dipped galvanized surface treatment.
Galvanized steel grating with heavy zinc coating protection serves widely as strong, quick and durable bearing structural elements in offshore oil rig platforms, refineries, walkways, and many other industries. Steel gratings galvanized make an better choice over non-galvanized steel bar grating due to the fact that the galvanized coating helps protects the steel from corrosion.
Galvanized Gratings for oil operation platforms are mostly made of heavy welded type steel bar grating heavily galvanised. Steel gratings serrated combined with diamond pattern checker plate are safer and popular stair tread and flooring material for offshore oil platform constructions.
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Load Bearing Flat Bar size |
Thickness≥3mm, depth ≥19mm |
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19X3,19X5,20X3, 20X5, 25X3, 25X4, 25X4.5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6…. |
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Pitch of Load bearding flat bars(mm) |
12.5,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80... |
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Pitch of cross bars(mm) |
38.1, 50, 50.8, 70, 75, 80, 99,100, 101.6, 102... |
Steel Grating Standard
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Country |
Steel grating standard |
Steel material standard |
Hot galvanizing standard |
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China |
YB/T4001-1998 |
GB 700-88 |
GB/T13912-2002 |
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USA |
ANSI/NAAMM(MBG531-88) |
ASTM (A36) |
ASTM(A123) |
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England |
BS4592-1987 |
BS4360 ( 43A) |
BS729 |
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Australia |
AS1657-1992 |
AS3679 |
AS1650 |
Steel Grating More detailed information
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No. |
Item |
Description |
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1 |
Bearing Bar |
25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc |
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I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc |
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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 |
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2 |
Bearing Bar Pitch |
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc |
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US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. |
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3 |
Twisted Cross Bar Pitch |
38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc |
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4 |
Material Grade |
ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400, |
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Mild steel & Low carbon steel, etc |
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5 |
Surface Treatment |
Black, self colour, hot dip galvanized, painted, spray coating |
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6 |
Grating Style |
Plain / Smooth, Serrated /teeth, I bar, serrated I bar |
Steel Grating Type
1.Plain type:
One of the most wiely used gratings, available for flooring, sidewalk, dranage pit cover, stair tread, etc
2.Serrated type:
Better Non-skid property & safety compared with plain grating
3.I-shape type
Lighter, more economical and practical comparing with plain grating
| Specifications of steel gratings | ||
| No | Item | Description |
| 1 | Bearing bar | 20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50…75x8mm, etc. |
| 2 | Bearing bar pitch | 25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc. |
| 3 | Cross bar | 5x5, 6x6, 8x8mm (twisted bar or round bar) |
| 4 | Cross bar pitch | 40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers' requirements. |
| 5 | Surface treatment | Untreated, Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as per customers' requirement. |
| 6 | Flat bar type | Plain, Serrated (tooth-like), I bar (I section) |
| 7 | Material standard | Low carbon steel (CN: Q235, US: A36, UK: 43A) |
| 8 | Galvanization standard | CN: GB/T13912, US: ASTM (A123), UK: BS729 |
| 9 | Steel grating standards | A. China: YB/T4001-1998 |
| B. USA: ANSI/NAAMM (MBG 531-88) | ||
| C. UK: BS4592-1987 | ||
| D. Australia: AS1657-1988 | ||
| E: Japan: JJS | ||
Q1: Are You a Factory Or a Middleman?
A: Yes, We Are A Professional Production Factory
Q2: How Can We Guarantee Quality?
A: Always A Pre-Production Sample Before Mass Production;
Always Final Inspection Before Shipment;
Q3: Can I Customize The Products?
A: Yes, As Long As Provide Specifications, Drawings you can Only Do What You Want Products.
Q4: Can you Provide Free Samples?
A: Yes, We Can Provide Free Samples, Customers who Want To Get A Sample, Customers Only Need To Pay The Freight.
Q5. Why Should You Buy From Us Not From Other Suppliers?
(1). The Real Manufactory, Give You A Good Quality And A Best Price,
(2). Contract Manufacturing: OEM Service Offered, Buyer Label Offered
(3). No Of Production Lines: Above 5
(4). Many Years Management, Give You A Good Ser
Q6: Minimum Order?
A: We Do Our Best To Maintain One Of The Lowest Minimum Order Amounts In The Industry. Meeting Customer's Requirement Is Our Ultimate Goal.
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