Factory-direct steel gratings & stair treads, shipped worldwide
Press-Locked Grating
Press-locked grating with close mesh and smooth finish, made to order.
Itemized quote within 24 hours · Free drawing review included
In-house press-lock line
Press-locked and welded panels under one roof
Certified & tested
Reports on request, MTC with every order
Samples in 5–7 days
Production in 15–25 working days
FOB Tianjin
Shipped worldwide, EXW / CIF negotiable
Process comparison
Press-Locked vs Forge-Welded vs Swage-Locked
Buyers write press locked grating, press locked steel grating, press locked bar grating or pressure locked grating — they all mean the same forming idea: bars locked by pressure, not by welds. Here is how that process compares with the alternatives, with an honest note on which lines run in our own workshop.
| Dimension | Press-Locked | Forge-Welded | Swage-Locked |
|---|---|---|---|
| Forming principle | Cross bars mechanically pressed into notched bearing bars — no welding | Every bearing-bar / cross-bar intersection resistance-forged under pressure | Cross bars swaged through pre-punched bearing bars |
| Load behavior | Very uniform load distribution; suited to pedestrian traffic | High load capacity at wide spans; joints cannot work loose | High transverse stiffness; holds fine bars firmly |
| Mesh range | Down to 11 / 11 mm close mesh | 30 / 40 / 60 mm centers | Dense patterns; depends on bar selection |
| Panel flatness | Extremely flat — no weld heat, no distortion | Flat panels straight off the line | Flat; depends on bar tolerances |
| Typical use | Municipal trench, tree pits, facades, fine floors | Platforms, walkways, trench covers, guardrails | Architectural and fine-mesh flooring |
| Our lines | In-house — our press-lock line | In-house — electro-forging line | Assessed per project on our press line |
Not sure which process fits your loads? Send your drawings — we will spec it inside the 24-hour quote.
How panels are made
From Notched Bars to a Locked Panel
Press locked steel grating needs only two forming steps — the joint is geometry, not a weld seam.
1 · Notching & assembly
Flat bearing bars are notched at every cross-bar position, then the flat cross bars are laid into the notches. Both members are plain flat bars — that is what gives press-locked grating its smooth, flat top and its regular appearance.
2 · Press-locking
The assembled grid goes through the press line: enormous even pressure deforms the notched bars around the cross bars, locking every intersection mechanically. No heat enters the panel — nothing distorts, and mesh can be set as close as 11 / 11 mm.
After pressing, panels are trimmed and banded to your drawings, then optionally sent for ASTM A123 / ISO 1461 hot-dip galvanizing at our certified partner plant — already counted inside your production window. Serrated flat-bar faces are available where the design calls for extra grip geometry.
Why specify press-locked
Why Buyers Specify Press-Locked Steel Grating
When a project calls for close mesh, a flush walking surface or a visible architectural pattern, press locked grating is the format specifiers reach for — and both welded and press-locked options are quoted from the same desk.
Close mesh down to 11 / 11 mm
Because the joint is pressed rather than welded, bar centers can run far closer than on a forge-welded line. Openings at 11 / 11 mm are small enough that a shoe heel or bicycle wheel will not drop through — municipal trench and tree-pit duty.
Ultra-flat, smooth on both faces
Flat-on-flat bar construction with no weld heat leaves panels dead flat and flush on top — the flat-top finish press locked bar grating is specified for on facades, screens and fine floors, where every panel face is on show.
Custom mesh, samples in 5–7 days
Custom mesh press grating is the norm, not the exception: send your bar sizes, centers and panel dimensions and we quote factory-direct FOB pricing, with sample panels and small trial orders welcome.
Applications
Where Press-Locked Panels Work Best
Close mesh plus a flush, even surface — pressure locked grating earns its place wherever the panel is walked on in ordinary shoes, or simply looked at.
Municipal trench covers
Curbside channels that drain stormwater while keeping heels, litter and cycle wheels out of the trench.
Tree pits & sidewalk grilles
11 / 11 mm openings let water and air reach roots while the sidewalk stays fully walkable.
Facades & sunscreens
Flat-top panels with a regular pressed pattern — press grating for facades where the grid itself is the finish.
Fine platform & mezzanine floors
Pedestrian-duty flooring in plants, plantrooms and rooftop plant decks — smooth underfoot, open to drainage.
Specifications
Press-Locked Grating Specifications
| Parameter | Range |
|---|---|
| Bar sections | Flat bars 20×3 mm to 100×8 mm, plain or serrated |
| Mesh range | 11 / 11 mm close mesh up to 60 mm centers |
| Cross bar | Flat bar, notched into bearing bars — both faces flush |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m |
| Materials | Q235B carbon steel · SS304 / SS316 stainless |
| Surface | Black or hot-dip galvanized (ASTM A123 / ISO 1461) |
| Panel format | Custom mesh to drawings, cut and banded |
Materials & test documents
Every heat of Q235B, SS304 or SS316 enters production with its mill test certificate verified at goods-in — the first of our five QC stages. Certified & tested, reports on request. Panels leave with documentation, not promises:
- Mill test certificate to EN 10204 Type 3.1
- Factory inspection report with every shipment
- Declaration of Conformity prepared per order destination
Load tables & calculators → · Close-mesh geometry explained →
Standards & compliance
Pressure Locked Grating, Produced to Recognized Standards
ANSI / NAAMM MBG 531
Press-locked panels produced to MBG 531 reference practice, with joint inspection on our five-stage QC plan.
ASTM A123 / ISO 1461 HDG
Galvanized coating thickness checked by sampling on every galvanized batch before panels are released.
CE & SGS tested
Certified & tested, reports on request — we show documents you can verify, not a certificate wall.
Custom made
Custom Mesh Press Grating, Cut and Banded to Your Drawings
Send your drawing
Mesh, bar sizes, panel dimensions and quantities — or just photos and a sketch. Drawing review is free.
Quote within 24 hours
Itemized, FOB Tianjin as standard — EXW or CIF on request. Small trial orders welcome.
Samples in 5–7 days, production in 15–25
Working days after drawing confirmation, hot-dip galvanizing included. Installation drawings and fixing layout ship with the order.
Factory-direct quote
Get a Factory Quote
Send mesh and panel sizes — an itemized quote lands within 24 hours, free drawing review included. Press locked steel grating from small trial orders.
- Five-stage QC, from MTC verification at goods-in to final inspection
- DoC, MTC EN 10204 3.1 and inspection report with every order
- Factory audits welcome — see the press line before you commit
Prefer to talk? WhatsApp us or sales@dtsteelladder.com
Request your quote
Five fields — we do the rest.
FAQ
Frequently Asked Questions
What is press-locked grating?
Press-locked grating is formed by pressing cross bars into notched bearing bars under high pressure, so the bars interlock mechanically — no welding and no weld heat. That is why the panels stay extremely flat and why the mesh can run as close as 11 / 11 mm.
Press-locked or welded steel grating — which should I choose?
Choose welded grating for heavy wheel loads and wide spans; choose press-locked for close mesh, flatness and a smooth finish on both faces. Both processes run in-house, and welded or press-locked options are quoted in the same 24-hour reply — send your loads and we will spec the right one.
Do you accept small orders of press locked steel grating?
Yes — small trial orders are welcome and samples ship in 5–7 working days. Mass production runs 15–25 working days after drawing confirmation, hot-dip galvanizing included. FOB Tianjin as standard, with an itemized quote per m² or per ton.
Related pages
Related Grating Pages
Close-Mesh Grating
11 / 11 mm geometry — heel-friendly openings explained.
View page →Swage-Locked Grating
Swaged cross bars through pre-punched bars — assessed per project.
View page →Welded Steel Grating
The forge-welded alternative for heavy loads and wide spans.
View page →Electro-Forged Grating
The resistance-welding process behind every welded panel.
View page →Press-Welded Grating
Hybrid terminology between pressing and welding, clarified.
View page →Serrated Flat Bar
Serrated flat-bar panels in press-locked formats.
View page →