Galvanized Steel Platform Grating for Operation Platform of Offshore Oil Rigs, Gas Production, Coal Handling, Draining Cover and Other Industrial Uses

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.

We supply quality galvanized gratings to Europe, Canada, USA, Japan and many other countries.


Galvanized Steel Grating Panels
Grating, Hot Dip Galvanized, serrated to BS 4592, Size 19ft x 3ft
Rectangular pattern with hexagonal or square twisted cross bars.
- Size of bearing bars: 40mm x 5mm serrated.
- Spacing between bearing bars: 30mm, connected together
with 8mm hexagonal twisted rod every 100mm.
- Top surface of bearing bars shall be serrated.
- Grating panels shall be hot dip galvanized of minimum 460GM/M ^ 2.
- Pitch of cross bars: 50mm.
- Grating suitable for Max. SPAN 67" for 1/4" deflection under uniform working load of 6.6 KN/M ^ 2.
- The grating bar shall be closed end.
Common grating dimensions: 1" x 1/8" x 36" x 24"


Sheets of Galvanized Grating
Sheet dimensions:
2400mm load bar length
1200mm sheet width
Thickness: 32mm x 5 Flat bar


Galvanized Steel Platform Grating - Grid Safety Mats / Mattress
32x5 - 45kg per square meter, including fastening mat
Galvanized grates 30/5 type, heat galvanized
Grate step: 240x800
Stair tread with non-slip reinforced nosing
Hot dip galvanized
Mesh: 30x40
Bearing bar: 30x4 including fastening material

Stair Tread Drawing


Serrated Galvanized Grating

Serrated galvanised steel grating panels
Serrated galvanised grating, with clamp / or clips, 6mm thk serrated bars, 25mm distance between serrated bars (internal), 8mm thk tie rods, 103mm distance between serration ties
Sheet length 6000mm, width 1000 mm x 35mm thickness grating

Galvanized Steel Grating for Construction

Exterior grating, maximum span 10'-6".
Suitable to varying lay-out in construction

Made in accordance with Standard Specifications for Construction:
- Grate dimensions
- Bar sizes and spacing
- Connection details
- Material type
- Coating
- Surface treatment
All structural steel shall be Grade 36 or Grade 50. Mill reports for all steel used in the fabrication.
Grating shall use 2-1/4” (total depth with serrated edge) x 1/4” bearing bars, spaced at 1-3/8”. 3/8”
diameter crossbars shall be spaced at 4”. The grate width shall be 3 feet. Section lengths shall be
sized to end at the center of a 6x6 transverse beams, minimum 18’-9” lengths.

Surface treatment: serrated.
Finish: hot-dipped galvanized.
The connection hardware is hot-dipped galvanized.
Connection method : saddle clips and 3/8” diameter by 5” long lag bolts.
Construction. Place the galvanized steel grating full length of the span. Assure grating has full bearing on the steel plates
and transverse wood beams. The steel plate has holes to allow for saddle clip and lag bolt connections.


Removeable Galvanized grating on seating frame
Galvanized grating, removable, 800mm x 800mm x 50mm thk
on 76mm x 50mm x 6.5mm thk seating frame

1 inch x 3/16 inch Galvanized Steel Grating
Baring bars 1"x3/16"
Min.weight 9.0 lbs.per sq. ft fasten to inlet utilizing pipe sleeves and bolts

Grating panel size:
3’-4” x 4’-10”
2’-0” x 10’-0”

Drawing reference


Rectangular Opening Bar Grating, BS 4592 Hot Dipped Galvanised

Hot Dip Galvanised Steel Bar Grating Panels - BS 4592
Grating, open fabric, rectangular BS 4592, hot dip galvanized
Material: Steel
Grating size: 20x3 feet
Standard BS4592
Bearing bars 30mm x 5mm hot dip galvd
Rectangular pattern open steel fabric with hex/twisted square cross bars
Pitch of bearing bars 41mm, pitch of cross bars 50mm
Suitable for max. clear span of 1.5m with 6.0 kn. sqm. safe uni-formly distributed load. material
Compliance certificate & proto-type test (deflection, permanent deformation & collapse)
Coating:  Heat Zinc coating


Heavy Duty Galvanized (Hot Dip) Steel Gratings

Size of the grating – 925mm x 1000mm
Square Cross Bar – 10 mm x 10mm
Bearing Plate – 120mm x 6mm thickness
Opening (pitch size) – 45mm x 45mm
2 sides with C Channels, size 100mm x 50mm x 5mm
Fabrication works includes notches/cut-outs
Galv: Hot dip galvanizing after fabrication
Welding specification as per BS EN: 4592

Galvanized Steel Bar Gratings
Resisting side 1310 mm
Mantled side 1695 mm
Open mesh 33x66mm
Side bar 30x2mm
Frame bar on the end of the resisting sides 50x2mm.

Minting Gratings

Rectangular Hole Minting Gratings
Drawing: Symmetric Grating
Technical details:
Support bar: L2x30x3
Cross bar: 6mm twisted steel
Terminal frame: min. 38mm
Grating fabric: 38x71 mm rectangular
Supporting bar space: 38mm
Cross bar spacing: 71mm
Load: FV 1190KG/m2

Square Opening Minting Gratings
Frame: 32x3
All support bar, cross bar and side frame are welded
DIN 24535 Industrial Standard
Supporting bar: 1062mm +0/-4
Cross bar: 490mm+0/-4
Fabric: 30x30
Supporting bar material: 32x3
Cross bar material: 6x6 twisted steel
Grating lattice: 32mm height
Material: Steel, Galvanized
Load: 1025 kg/m2

DIN 50976 Hot Dip Galvanized Grating
Grating Panels 960x612mm
Opening: 30x30mm
Supporting rod: 2mm
Cross bar: 2mm
Grating height: 30mm
Material: Steel, Hot Dip Galvanized DIN 50976
Tolerance: RAL-GZ 638

L2x30x3 Serrated Grating
Opening: 30x30mm
Grating height: 30mm
Cross bar: 5mm twisted steel
Material: S235 JR low carbon steel, Hot Dip Galvanized DIN 50976
Tolerance: +0/-4

30x3x6 Galv. Minting Grating
Grating hole: 30x30mm
Support bar: 30x3mm
Cross bar: 6x6mm
Grating panel height: 30mm
Loading: 150kg/m2
Material: Carbon steel, Hot Dip Galvanized DIN 50976

Steel Gratings for Track Hopper Construction for Coal Handling Plant Package in Thermal Power Stations
Drawing reference
Thermal power stations need extensive coal handling and storage. Track Hoppers used for coal handling in power plants are constructed with reinforced cement concrete hopper with metal steel grating covers. All welds applied in grating construction are 6mm thick continuous fillet.


Plat Form Gratings - for Gas Production Facilities

Platform Gratings and Grating Clip
Material: Carbon steel
Hot Dip Galvanised

Platform grating refer attached drawing NO 9468-VP-SK-35-C-01-B01048/7-C6 rev3
Grating vendor to submit grating drawings for approval before fabrication
Gratings to be hot dip galvanised in accordance with ASTM A 123 or A153
Befor galvanizing maerial shall be fully fabricated, free from all flashes or burrs, with smooth edges, and with all welding complete
Gratings to be 32 * 5 serrated bearing bars & binding bars on 30 NOM centers, c/2 square twisted bars on 100 center

PIPE SUPPORT CLIP SA516-70 221 x 196 x 10 THK.
PIPE SUPPORT CLIP SA516-70 284 x 303 x IO THK.
PIPE SUPPORT CLIP SA516-70 158 x 467 x ID THK.
PIPE SUPPORT CLIP SA516-70 158 x 467 x 1D_TRK.
PIPE SUPPORT PAD SA516-70 299 x 110 x 10 THK.
PIPE SUPPORT PAD SA516-70 403 x.110 x 10 THK.
PIPE SUPPORT PAD SA516-70 467 x 110 x 10 THK
PIPE SUPPORT PAD SA516-70 467 x 110 x 10 THK
LADDER CLIP SA516-70 209 x 1D0 x 10 THK.
LADDER CLIP PAD SA516-70 200 x 100 x 10 THK.
LADDER CLIP SA516-70 95 x 100 x 10 THK_
LADDER CLIP SA516-70 146 x 100 x 10 THK
LADDER CLIP SA516-70 100 x 100 x 10 THK.
STFFNER CLIP SA516-70 131 x 100 x 10 THK.
PIPE SUPPORT CLIP SA516-70 100 x 100 x 10 THK.
PIPE SUPPORT PAD SA516-70 200 x 90 x 10 THK.



Platform Ladder Grating and Pipe Clip

Stabilizer Platform Frame and Support

76.01 FRAME SA36 L 75 x 75 x 6 x 8100 LG.
76.02 FRAME SA36 L 75 x 75 x 6 x 3100 LG.
76.03 FRAME SA36 L 75 x 75 x 6 x 4700 LG.
76.04 FRAME SA36 L 75 x 75 x 6 x 1700 LG.
76.05 FRAME SA36 L 75 x 75 x 6 x 6600 LG.
76.06 FRAME SA36 L 75 x 75 x 6 x 2500 LG.
76.07 FRAME SA36 L 75 x 75 x 6 x 4800 LG.
76.08 FRAME SA36 L 75 x 75 x 6 x 1710 LG.
76.09 FRAME SA36 L 75 x 75 x 6 x 3400 LG.
76.10 FRAME SA36 L 75 x 75 x 6 x 1300 UG.
76.11 FRAME SA36 L 75 x 75 x 6 x 1400 LG.
76.12 FRAME SA36 L 75 x 75 x 6 x 1452 LG.
76.13 SUPPORT SA36 C 150 x 75 x 6.5 x 1400 LG.
76.14 SUPPORT GUSSET SA36 69 x 136 x 10 THK.
76.15 SUPPORT GUSSET SA36 65 x 150 x 10 THK.
76.16 SUPPORT GUSSET SA36 195 x 150 x 10 THK.
76.17 PLATFORM CUP SA36 300 x 190 x 10 THK.
76.18 PLATFORM CUP PAC SA516-70 400 x 100 x 10 THK.
76.19 SPACER SA36 250 x 60 x 6 M
76.21 BOLT C/W NUT & WASH SA325 HDG. M20 x 50 LG. (FULL THREAD)

1. All weld to be 6 C.F.W. Unless noted otherwise.
2. Remove all sharp edges, corners & hole burrs.
3. All corner joint to be notched r.25 or Ø12 followed by seal weld all round.
4. Platform structural to be painting as per spec: GL-SP-M-037.
5. Handrail & safety gate surfaces as per ral 1023 yellow.
6. All grating to be hot dip galvanized.
7. Grating as per stadard drawing (main bars 32x5t serrated)





Steel Grating Hot Dip Galvanized for UAE

Steel Grating

  1. Load Bar - 80mm x 6mm Plain
  2. Cross Bar - 6mm Twisted Square Bar
  3. Load Bar Pitch - 30mm
  4. Cross Bar Pitch - 100mm
  5. Material - Mild Steel S275JR
  6. Finished - Hot Dip Galvanized
  7. Size - 500 x 1000 mm Span

Drawing Reference:

Bar Details:


Hot Dip Galvanized Steel Grating Serrated, to BS 4592-1

Galvanized Steel Grating, hot dip galvanized steel grating panels, bearing bar serrated surface

Panels of gratings serrated to bs 4592-1
Size 19ft x 3ft, rectangular pattern with square twisted cross bars
Size of loadbearing bars: 40mm x 5mm serrated.
Spacing (center to center) between loadbearing bars: 35mm
Connected together with transverse bars 6x6mm twisted every 100 mm.
Top surface of bearing bars serrated.
Grating panels hot dip galvanized standard: minimum zinc coating of 460g/mma2
Graiting sutable for max.span 1702mm for 4.34mm deflection under uniform working load of 6.6 kn/m^2
Grating bars have closed ends with binding bars.
Binding bars have the same thickness of loadbearing bars.


  1. Hot dip galvanized steel grating serrated as per BS 4592-1"2006" each panel size 19ftx3ft, rectangular pattern with square twisted cross bars.
  2. Size of loadbearing bars: 40mm x 5mm serrated.
  3. Spacing (center to center) between loadbearing bars: 35mm, connected together with transverse bars twisted every 100 mm.
  4. Transverse bars is a 8x8 twisted square bars (the size of each square side after twisting is 8x8mm)
  5. Top surface of bearing bars shall be serrated, and the serration depth shall be not less than 2.5mm after galvanization as per BS 4592-1"2006".
  6. Grating panels shall be hot dip galvanized of minimum 460g/mm^2.
  7. Grating suitable for max. span 1702mm for 4.34mm deflection under uniform working load of 6.6 kN/m^2.
  8. The grating bar shall have closed ends with binding bars.
  9. binding bars shall have the same thickness of loadbearing bars.
  10. All dimensions' tolerances shall be according to BS 4592-1"2006".


Galvanized Steel Grating Panels with Frames - Framed Gratings

Type One: Grating Inner Frame: Size 45mmx 384mmx 884mm
Grating Outer Frame size: 50mm x400mm x900mm
Twisted bar steel grating framed

Grating Inner Frame Details:

Type Two: Steel Grating with Frames and Hinges
Outer frame: size 80mm x 300mm x 1000mm
Inner frame: size 75mm x 334mm x 984mm
Steel Grating with Hinges 75mm x 350mm x 1000mm


Samples of Application Illustration

Platform Walkway Grating
Galvanized Steel Platform Grating, for Platform and Bridge Walkway

Hot Dip Galvanised Bar Grating Panels - ASTM A36
Outdoor metal drain steel grating

Serrated galvanized grating - trench cover mesh grille steel grating

Rivet grating, hot dip galv.

Galvanized Steel Grating Plates Processing and Uses

Steel plates welded on certain flat steel bar and spacing with the high-pressure welding machine welded together is called steel gratings. The cutting, incision, opening, the package-processing procedures are necessary as customer demand for the finished product. Its characteristics include high-intensity and light structure. The grid is a firmly welded steel bar structure with a high capacity, light structure, easy loading and other characteristics like aesthetic appearance. The hot-dip zinc surface treatment gives it a good anti-corrosion capacity, shiny surface appearance and durability for uses. It is suitable for places and sites requiring ventilation, explosion proof, lighting resistance, heat resistance materials. Widely used in the petrochemical industry, power plants, waterworks, sewage treatment plants, municipal works, sanitation projects in areas such as platforms, corridors, bridge, ditch cover, well covers, ladders, fences, rails, and so on.

Steel Grating is made by stainless or mild steel of certain sizes through the processing of grooving, lock-pressure, welding, finishing and other treatment. Industrial bar gratings can be actually made from copper, aluminum and other materials, while galvanized steel grating is the mostly used one due to its economic cost and good property.

The advantages, specific application and features of steel grating:
Steel grating offers the following advantages compared with steel grid sheets:
Steel grating has light weight, good strength, large carrying capacity and can save materials and cost. It offers good ventilation of light and wind, a modern sense, aesthetic appearance and anti-skid safety. It is also easy to clean, easy to installation and durable for uses.

Steel grating products are designed and manufactured for various industrial and civil constructions in city road, gardens, yard, airport, railway and industrial engineering, and they offer the following the features:

Aesthetic outlook: Simple lines and silver appearance meeting the modern trend.

The best drainage: Leakage area of 83.3 percent, more than twice of cast iron products.
Hot-dip galvanized treatment: Good rust-proof property, maintenance-free replacement.
Anti-theft design: The cover and the frame is joint with hinge offering security, safety and open convenience.

Savings investments: Large-span. Less lost for heavy load compared with cast iron products. Cost can be saved for the risk of being stolen or crushing one if cast iron is uses.

High strength: The strength and the toughness are much higher than cast iron. Can be used for terminals, airport and other large-span and heavy loading condition.
Specifications: More specifications and sizes optional for meeting various environment, load, span, sizes and shapes.

Galvanized Grating Sheet Sizes Available:
863X1000 mm
577X863 mm
863X1000 mm
825X1172 mm
750X803 mm
803X1356 mm
1000X1195 mm
749X1170 mm
1000X1170 mm
622X1170 mm
1000X1182 mm
1182X1376 mm
745X1146 mm
848X1146 mm
1073X1104 mm
788X1104 mm
908X1104 mm
908X1604 mm
1104X1165 mm
688X800 mm
750X1598 mm
210X800 mm
760X968 mm
760X1000 mm
401X760 mm
407X990 mm
637X760 mm
760X1030 mm
1097X2020 mm
1096X2020 mm
560X1498 mm
1092X1178 mm
740X1178 mm
709X1178 mm
702X1178 mm
466X1178 mm
342X1457 mm
626X1178 mm
784X1375 mm
990X1144 mm
TREAPTA 240X800 mm
908X1165 mm
788X908 mm
908X1073 mm

Samples and Data Sheets
We as supplier will enclose detailed dimensional drawings in the technical quotation according to customers requirements.
A sample of the offered steel grating with dimensions of 30x30cm can be provided prior production or delivery as arranged.
The designed weight for each panel is provided in data sheet.

Standards We follow
Chinese YB/T4001.1-2007 or YB/T4001-1998 "Steel grating" standard
American ANSI/NAAMM (MBG531-93) standard
British BS4592-1:1995 standard
Others per customers requirements.

Find Us

Qindelin Steel Grating Engineering Corporation
Add: New Development Zone, Dezhou, Shandong, China

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