Full press-locked grid
A clean, regular grid for industrial flooring, screens and visible access areas.
Engineered Around Your Load & Span
Press-Locked Grating
Press-locked grating — also called pressure-locked grating in some markets — is assembled by pressing flat cross bars into pre-slotted bearing bars. DONGFU panels are press-locked first, then receive supplementary welding where the approved drawing requires it. Bar depth, spacing, material, layout and finish are confirmed before quotation.
- Press-locked primary grid with drawing-specified supplementary welds
- Carbon steel, stainless steel and aluminum options by project specification
- Custom spacing, banding, cut-outs and irregular panel shapes
Mechanically locked Custom spacing Drawing based Multiple materials
When press-locked construction is the right starting point
Press-locked construction is useful where the project needs a regular visual grid, flexible spacing or a material and finish combination that should be reviewed separately from standard welded grating. The bearing bars are slotted first, then flat cross bars are pressed into position to establish the primary grid.
On the DONGFU panels shown on this page, selected joints and fabrication details receive supplementary welds after press-locking. These welds complete the approved production drawing; they do not replace the mechanical locking method that defines the grid.
The construction name alone does not establish capacity. Bearing bar section, spacing, clear span, support condition, load type and the governing project standard still control the final selection.
Depending on the selected bar profiles, the mechanically engaged cross bars can create a flush or near-flush upper grid with clean, repeated openings. This visual regularity is useful for screens and visible access areas, but the joint detail, bar orientation and supporting edges still need to be shown on the approved drawing.
Construction Sequence
Press-locked first, then completed to the drawing
The production sequence matters. Mechanical locking establishes the grid; supplementary welding and fabrication are applied afterward only where the approved panel drawing requires them.
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Prepare the bearing bars
Bearing-bar slots, cross-bar profile and grid spacing are prepared to the confirmed drawing and checked before assembly.
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Press-lock the grid
Flat cross bars are aligned with the slots and pressed into the bearing bars to form the primary mechanical grid.
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Complete welding and fabrication
Selected joints, banding, cut-outs and other project details receive supplementary welding and finishing as shown on the approved production drawing.
Selection Guide
Press-Locked Grating vs Welded Grating
Construction type alone does not establish which option is stronger. Compare the joint method, bar profiles, required appearance, spacing, material, production quantity and the verified load case before selecting a route.
| Decision point | Press-locked grating | Welded grating |
|---|---|---|
| Primary grid formation | Flat cross bars are mechanically pressed into slotted bearing bars; selected joints may be supplementary-welded afterward. | Cross bars are joined to bearing bars by resistance press-welding or a qualified manual welding route. |
| Grid appearance | Clean, regular openings with flush or near-flush intersections depending on the selected bar profiles. | A familiar industrial grid with visible welded intersections and standard production patterns. |
| Typical production fit | Visible floors, screens, custom spacing and drawing-led panels where grid regularity matters. | Repeated standard panels and high-volume industrial platforms, walkways and covers. |
| Load selection | Confirm bearing-bar section, spacing, span, support condition and load type for the actual panel. | Confirm the same engineering inputs; welded construction alone does not establish capacity. |
Gallery
Press-Locked Grating in Detail
Specifications
Specification Options
| RFQ input | What to send | Why it matters |
|---|---|---|
| Material | Carbon steel, stainless steel or aluminum; state the required grade or alloy. | Material affects slot geometry, locking, supplementary welding and the available finish. |
| Bearing bar | Depth and thickness, or the required load together with the clear span. | The bearing-bar section and span are primary load-selection inputs. |
| Bearing bar spacing | Metric or imperial spacing series and any opening-size limit. | Spacing changes open area, appearance, small-object passage and load distribution. |
| Cross bar | Flat-bar profile, spacing and any flush-grid requirement. | These inputs define the slot pattern, grid appearance and locking detail. |
| Span and support | Clear span, bearing-bar direction, support width and load type. | Capacity cannot be confirmed from the construction name or panel size alone. |
| Surface and weld detail | Plain or serrated surface plus any required supplementary weld locations or inspection criteria. | The surface affects grip; weld requirements must match the approved production drawing. |
| Finish | Mill finish, hot-dip galvanized, passivated, anodized, painted or coated as applicable. | Finish selection affects tolerances, appearance and the production sequence. |
| Panel layout | Panel dimensions, cut-outs, banding, piece marks, support edges and removable areas. | A layout drawing prevents incorrect bearing direction and unsuitable panel divisions. |
| Order information | Quantity, destination, project standard and required documentation. | These inputs determine the practical production, packing and quotation route. |
Variants
Recommended Types
Fabricated press-locked panels
Press-locked grids completed with drawing-specified supplementary welds, edge banding, cut-outs and piece marks.
Applications
Where Press-Locked Grating Is Used
Industrial Platform Grating
Open-grid flooring for chemical plants, equipment platforms and mezzanines — strength, drainage and ventilation in one panel.
View application
Walkway & Catwalk Grating
Safe, drained, ventilated walkways for photovoltaic arrays, pipe racks, tank farms and roof access routes.
View application
Trench Covers & Drainage
Drainage covers that keep water moving and traffic safe — from pedestrian channels to truck crossings.
View application
Food & Pharma Grating
Stainless grating planned around hygienic washdown, cleaning chemistry, drainage and accessible, passivated fabrication.
View applicationFabrication & QC
Fabrication & Quality Notes
- The primary grid is press-locked; supplementary weld points visible on finished panels are applied afterward at locations required by the production drawing.
- Show bearing bar direction, support edges, openings and removable panels on the layout.
- State whether the project requires a flush visual grid or a specific opening size.
- Confirm whether quoted dimensions apply before or after the selected coating process.
- Confirm the slot pattern, cross-bar profile and locking detail on a sample or production drawing before releasing non-standard panels.
- Large panel widths, unusually deep or thin bars and complex shapes are reviewed against available tooling, handling and finishing. Feasible limits are confirmed for the specific project; a generic catalogue does not establish them.
Packaging
Packaging & Delivery
- Support bundles beneath the bearing-bar direction and use spacers so straps do not pull the regular grid out of square.
- Protect exposed bar ends, banded edges and visible faces from impact or abrasion during forklift handling and container loading.
- Keep stainless steel or aluminum panels isolated from bare carbon-steel packing surfaces where contact contamination would affect the specified finish.
- Apply panel marks and packing-list references outside protective wrapping so installers can sort fabricated pieces without opening every bundle.
FAQ
Press-Locked Grating FAQs
How is press-locked grating different from welded grating?
Press-locked grating uses mechanical pressure to lock flat cross bars into pre-slotted bearing bars, while welded grating forms its primary grid through resistance or manual welding. DONGFU press-locked panels can receive supplementary welds after locking where the approved drawing requires them. The correct choice still depends on bar section, spacing, material, appearance, span, load and the project standard.
Can press-locked grating be fabricated to a drawing?
Yes. Rectangular panels, cut-outs, banded edges and irregular shapes can be detailed from an approved panel layout showing dimensions, bearing direction and support edges.
What information is needed for a quotation?
Send material, bearing bar size or required load, spacing, clear span, surface, finish, panel dimensions, quantity and destination. A project drawing is the best starting point.
What panel sizes and bearing bar ranges are available?
Practical limits depend on material, bar profile, spacing, joint tooling, panel weight, finishing and transport. Send the required layout and we will confirm feasible panel divisions and bar options for that project instead of quoting an unsupported universal maximum.
Can press-locked grating be made in carbon steel, stainless steel or aluminum?
These material families can be reviewed, but the same joint detail is not automatically suitable for every grade or alloy. Before production, confirmation must cover the material, bar profiles, locking method, finish, span and load.
Can press-locked panels have serrations, cut-outs or irregular edges?
Cut-outs, banding and irregular outlines can be detailed from drawings. Serrated surfaces and other special profiles depend on the selected construction and tooling. They are confirmed at the specification stage and are not presented as a standard option.
How are order quantity and production time confirmed for a press-locked project?
They depend on material availability, tooling, panel variety, total quantity, finish and drawing approval. We confirm the practical order quantity and production schedule after reviewing these inputs; non-standard work is not assigned a generic lead-time promise.
Send Your Drawings, Get a Confirmed Specification
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