Factory-direct steel gratings & stair treads, shipped worldwide
Swage-Locked Grating
Swaged grating from our own weld & press lines, cut to size.
In-house lines: electro-forging + press-locking · Swage-locked enquiries assessed per project on our press line
In-house weld & press lines
Electro-forging and press-locking 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
Swage-Locked vs Press-Locked vs Forge-Welded
The forming process decides mesh density, flatness and how the panel behaves underfoot. Here is how the three mechanical grating processes compare — with an honest note on which lines run in our own workshop.
| Dimension | Swage-Locked | Press-Locked | Forge-Welded |
|---|---|---|---|
| Forming principle | Cross bars swaged — deformed — through pre-punched holes in bearing bars | Cross bars mechanically pressed into notched bearing bars — no welding | Every bearing-bar / cross-bar intersection resistance-forged under pressure |
| Load behavior | High transverse stiffness; holds fine bars firmly | Very uniform load distribution; suited to pedestrian traffic | High load capacity at wide spans; joints cannot work loose |
| Mesh range | Dense patterns; depends on bar selection | Down to 11 / 11 mm close mesh | 30 / 40 / 60 mm centers |
| Panel flatness | Flat; depends on bar tolerances | Extremely flat — no weld heat, no distortion | Flat panels straight off the line |
| Typical use | Architectural and fine-mesh flooring | Municipal trench, tree pits, facades, fine floors | Platforms, walkways, trench covers, guardrails |
| Our lines | Assessed per project on our press line | In-house — press-lock machine | In-house — electro-forging line |
Not sure which process fits your loads? Send your drawings — we will spec it inside the 24-hour quote.
How panels are made
The Swage-Lock Process, Step by Step
1 · Punching the bearing bars
Flat bearing bars are punched with a regular row of holes. The hole pitch is what sets the pattern — dense or open — before any assembly begins.
2 · Swaging the cross bars
Cross bars are pushed through the holes, then swaged — deformed under pressure — so each end flares and the joint locks mechanically, with no welding heat in the panel.
3 · Finishing & inspection
Panels for outdoor duty go to a certified galvanizing partner near our mill for ASTM A123 / ISO 1461 hot-dip galvanizing — typically 2–3 days, already counted inside your production window.
Our lines, honestly
Our in-house forming lines are electro-forging and press-locking — we do not run a standing swage-locked production line. Swage-locked enquiries are assessed per project on our press line: we take them on when the pattern suits the tooling, and we say so plainly when press-locked or electro-forged panels serve the duty better. Send your drawing and the 24-hour quote comes back with the honest recommendation.
Why specify swaged
Why Specifiers Ask for Swage Locked Bar Grating
Dense patterns, flat top
Because the hole pitch sets the mesh, swaged grating keeps dense, even patterns with fine bars held firmly — and a flat walking surface with no weld beads across it.
Stiff across the panel
The mechanical lock gives swage locked grating high transverse stiffness — the panel resists sideways racking, which is why the process is specified for flooring and screens where flatness matters.
Custom patterns to your drawings
Custom swage locked bar grating is quoted to your bar heights, hole pattern and panel sizes — with free drawing review inside the 24-hour quote.
Applications
Where Swage-Locked Panels Are Specified
Dense patterns, even transparency and a flat surface — swaged steel grating is chosen wherever the mesh itself is part of the design intent.
Architectural facades & screens
Dense swaged patterns used as facade ventilation and screening panels with even transparency.
Fine-mesh flooring
Close patterns keep openings small — the geometry specifiers choose for pedestrian comfort on interior floors.
Sunshade & ventilation panels
Flat swaged panels as louvre-style screens where airflow and shading must stay even across the panel.
Stair & barrier infill
Dense-pattern infill panels for stairs, balustrades and guardrails where a fine, flat mesh is wanted.
Specifications
What We Need to Quote Swaged Steel Grating
| Parameter | Range / input |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm flat bar, hole pattern per drawing |
| Cross bar | Round or shaped bars, per your pattern and spacing |
| Bar spacing (in-house lines) | 30 / 40 / 60 mm centers · 11 / 11 mm close mesh |
| 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) |
| Full pattern table | Provided with your quote, per project |
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. 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
Standards & compliance
Produced to Recognized Standards — Documents on Request
ANSI / NAAMM MBG 531
Panels produced to MBG 531 reference practice; swage-locked enquiries are reviewed against it in the per-project assessment.
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
Swaged Grating to Your Drawings — Assessed Per Project
Send your drawing
Bar heights, hole pattern, spacing, panel sizes and quantities — or just photos and a sketch. Drawing review is free.
Assessment + quote within 24 hours
Swage-locked enquiries are assessed per project on our press line. The itemized quote states which route we recommend — swaged joints where the tooling suits, press-locked or electro-forged where it does not. FOB Tianjin, 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 your pattern and panel sizes — an itemized quote lands within 24 hours, with the per-project assessment and free drawing review included.
- Honest assessment: in-house lines are electro-forging and press-locking; swage-locked enquiries assessed per project on our press line
- DoC, MTC EN 10204 3.1 and inspection report with every order
- Factory audits welcome — see the lines 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
Do you make swage-locked grating in your own factory?
Not as a standing line. Our in-house forming lines are electro-forging and press-locking; swage-locked enquiries are assessed per project on our press line. If press-locked or electro-forged panels serve your duty better, the quote says so plainly.
What is swage-locked bar grating?
A mechanically locked grating: holes are punched in the bearing bars, cross bars are pushed through, and each cross bar is swaged — deformed under pressure — so the joint locks without welding. The result is a dense, flat pattern with high transverse stiffness.
Can I get samples, and how is shipping handled?
Yes — samples ship in 5–7 working days and confirmed orders run 15–25 working days after drawing confirmation, hot-dip galvanizing included. Panels ship worldwide from Tianjin Port, FOB Tianjin as standard, EXW or CIF negotiable.
Related pages
Related Grating Pages
Press-Locked Grating
The closest in-house route to a dense, no-weld pattern.
View page →Close-Mesh Grating
11 / 11 mm openings — small-opening flooring geometry.
View page →Welded Steel Grating
Our flagship electro-forged line — high load at wide spans.
View page →Electro-Forged Grating
The resistance-welding process behind every welded panel.
View page →Welded Grating
The welded family overview — galvanized, serrated, custom.
View page →I-Bar Grating
I-shaped bearing bar options across the spec range.
View page →