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Steel Platform Gratings from Turkey: Press-Locked and Welded, DIN 24537
Steeling.net is a steel grating supplier in Turkey: we source platform gratings from partner manufacturers in İzmir and Ankara and ship them to industrial, energy and infrastructure projects abroad. Gratings are made to DIN 24537, hot-dip galvanized to EN ISO 1461 and cut to size for each project.
Key facts
- Standard: DIN 24537 floor gratings
- Standard bearing bar: 30 × 3 mm; other sizes selected by load calculation
- Types: full-pass and half-pass press-locked, welded with twisted square cross bars, serrated anti-slip
- Finishes: hot-dip galvanized (EN ISO 1461), electro-galvanized or painted; stainless steel and aluminium on request
- Supply: cut to drawings with frames and cut-outs, or standard panels
- Engineering: load calculation shared as a technical report with every quotation
Grating types we supply
| Type | Construction | Example DIN 24537 designation | Load class and typical use |
|---|---|---|---|
| Full-pass press-locked grating | 30 × 3 mm bearing bars interlocked with bars of the same size in both directions | P330-33×33-3 | High load; heavy-duty platforms, loading ramps, plant floors |
| Half-pass press-locked grating | 30 × 3 mm bearing bars with 16 × 3 or 12 × 3 mm cross bars pressed in at half depth | P330-33×33-3 | Medium to high load; walkways, mezzanines, maintenance platforms |
| Welded grating with twisted square cross bars | Bearing bars joined with twisted square bars | SP330-34×38-3 | Industrial flooring, catwalks, stair treads |
| Serrated (anti-slip) grating | Notched bearing bars; available on all types | On request | Wet, oily or outdoor areas and ramps |
How to read a DIN 24537 designation
In a designation such as P330-33×33-3, the letter gives the production method: P for press-locked and SP for welded (electroforged) gratings. The next figures give the bearing bar size, here 30 × 3 mm. The mesh follows as two pitches in millimetres: the first is the distance between bearing bars, the second the distance between cross bars. The bearing bar size and the bearing bar pitch are always written first.
Fine-mesh press-locked gratings for pedestrian and heel-proof areas are also available, with published designations from P225-11/11-2 to P225-19/66-2, covering bearing bar pitches of 11 and 19 mm and cross bar pitches from 11 to 100 mm.
Press-locked or welded grating?
| Press-locked (P) | Welded with twisted bars (SP) | |
|---|---|---|
| Surface | Flush bars in both directions | Twisted cross bars give extra grip |
| Mesh range | Wide, including fine and heel-proof meshes | Standard industrial meshes such as 34 × 38 mm |
| Typical choice | Visible walkways, architecture, heavy loads (full-pass) | Economical industrial platforms and catwalks |
Specification options
- Material: carbon steel; stainless steel and aluminium on request
- Finish: hot-dip galvanized to EN ISO 1461 (TSE EN ISO 1461), electro-galvanized or painted
- Surface: plain or serrated
- Edges: framed panels; kick plates (toe plates) around openings and platform edges
- Shapes: cut to your drawings, including cut-outs around columns, pipes and equipment
- Vehicle areas: gratings can be supplied with perforated plates welded between the bearing bars
- Related items: stair treads, catwalk gratings, panel gratings for raised floors, fixing clips
Manufacturing tolerances
| Characteristic | Tolerance |
|---|---|
| Difference of panel diagonals (D1 − D2) | ≤ 0.01 × L |
| Panel length and width | +0 / −4 mm |
| Bearing bar pitch | ± 1.5 mm |
| Cut-out dimensions | +8 / −0 mm |
| Lateral bow of the panel | ≤ 0.0025 × S |
| Inclination of bearing and edge bars | ≤ 0.1 × H, max. 3 mm |
| Cross bar projection above bearing bars | ≤ 1.5 mm |
| Convex or concave bow | L/200; max. 8 mm for L > 600 mm, max. 3 mm for L < 600 mm |
| Frame bar projection, top or bottom | ≤ 1.0 mm |
| Cross bar overhang at the frame | ≤ 0.5 mm |
Load calculation and technical report
Bearing bar height, thickness and mesh are chosen by engineering calculation for your span and load. The manufacturer shares the calculation as a technical report with the quotation, so your engineer can check it before you order.
Working to BS 4592 or ANSI/NAAMM specifications
Projects in the UK and the Gulf often specify BS 4592, and projects in the United States ANSI/NAAMM MBG 531. Send us your specification: we review it with the manufacturer and state in the quotation how the DIN 24537 grating meets it.
Fixing clips and installation
- Fix every panel at least at its four corners wherever there is a risk of falling; the standard recommendation is four clips per square metre.
- Standard clip (top plate, lower piece, bolt, nut and washer): fixed from above, for meshes of 33 mm and more. The bolt should be at least the grating height plus 30 mm. A stainless steel version is available.
- Threaded clip: the nut is locked to the clamp, so the grating cannot slip off the support even if the bolt loosens. Suitable for mesh openings of about 25 to 40 mm.
- J-hook and L-hook clips: fixed from above and hooked under the support beam. Tell us the support profile size when ordering.
- Check fixings at regular intervals; the interval depends on traffic and site conditions.
Grating stair treads
Stair treads are made from the same gratings with bolted side plates and an anti-slip nosing at the front edge. Side plates are perforated metal plates welded to both ends of the tread and bolted to the stair stringers. The nosing is a perforated strip welded to the front of the tread, and to landings if required, to reduce slipping and make the edge visible.
Typical uses are fire escape stairs, ship ladders and silo stairs, container and prefabricated buildings, and other areas where slip resistance matters. Treads are supplied hot-dip galvanized, electro-galvanized or painted, and in stainless steel or aluminium on request. See Metal Steps.
Bar grating terms
- Bearing bar: the load-carrying flat bars that rest on the two supports. They always run in the span direction, and their size is written first in the designation.
- Cross bar: the bars that connect the bearing bars: flat bars in press-locked gratings, twisted square bars in welded gratings.
- Mesh (pitch): the distance between bearing bars, then the distance between cross bars, in millimetres.
- Frame (binding bar): the flat bar welded around the panel edge.
- Kick plate (toe plate): a raised frame around openings, pipes and columns that stops feet and objects from slipping off the edge.
- Serration: notches on the top edge of the bars for slip resistance.
Applications
- Industrial platforms and mezzanines in factories, power plants and cement plants
- Walkways and catwalks along conveyors, cranes, bridges and facades
- Stair treads and fire escape stairs
- Loading ramps and trench covers (see Channel Grating Systems)
- Raised floor panels and special shapes with column cut-outs
- Shipbuilding, mining, water treatment, silos, telecom base stations and racking systems
How export orders work
- Send drawings or a list of panel sizes, the span and load, the finish and the delivery port.
- We return a quotation with the manufacturer’s technical report.
- The gratings are produced, galvanized and checked at the manufacturer in Turkey.
- Panels are packed for sea or road freight and shipped with your export documents.
Example enquiry: press-locked grating DIN 24537 P330-33×33-3, serrated, panels 1000 × 5800 mm, 120 pieces, hot-dip galvanized to EN ISO 1461, with clips, CIF Jebel Ali.
Lead time, minimum order and Incoterms are confirmed in each quotation. Steeling.net charges buyers no sourcing fee or commission.
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Frequently Asked Questions
Which grating types can you supply from Turkey?
Full-pass and half-pass press-locked gratings, welded gratings with twisted square cross bars, fine-mesh heel-proof gratings and serrated anti-slip versions, all to DIN 24537. The standard bearing bar is 30 × 3 mm; other sizes are selected by load calculation.
Are the gratings hot-dip galvanized?
Yes. Hot-dip galvanizing to EN ISO 1461 is the standard finish for outdoor and industrial use. Electro-galvanized and painted gratings are also available, as are stainless steel and aluminium gratings.
How are bearing bar size and mesh chosen?
By engineering calculation for your span and load. The manufacturer selects bearing bar height, thickness and mesh, and shares the calculation as a technical report with the quotation.
Can you work to BS 4592 or ANSI/NAAMM specifications?
Send us the specification. We review it with the manufacturer and state in the quotation how the DIN 24537 grating meets BS 4592 or ANSI/NAAMM MBG 531 requirements.
Can gratings be cut to size with cut-outs?
Yes. Panels are cut to your drawings, including cut-outs around columns and pipes and special shapes. Standard panels are also available for projects without detailed drawings.
What do I need to send for a quotation?
Panel sizes or drawings, span and design load, grating type and finish, quantity and delivery port. Steeling.net charges buyers no sourcing fee or commission.