Factory-direct steel gratings & stair treads, shipped worldwide
1 Inch Bar Grating
Bar grating questions answered. Charts, specs and drawings, free.
Itemized quote within 24 hours · Free drawing review included
Factory-direct from the mill
3,000 ㎡ workshop, four product lines
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
Designation guide
Where the 1 Inch Class Sits in Our Bar Range
One inch (25.4 mm) names the bearing bar height — the number that sets the duty class. Our welded range runs from 20×3 mm up to 100×8 mm, so the 25 mm class sits near the light end: the right economics for foot traffic and light carts, with deeper bars one step away when loads grow. If you are cross-checking 1 bar grating against a 1 1/4 grating spec, the jump to the next depth class usually buys longer clear spans rather than a different production path.
| Dimension | 1 In (25 mm) Class | 1 1/4 In Step-Up | Heavy-Duty Deep Bars |
|---|---|---|---|
| Bearing bar height | ≈25 mm (1 in) — near the light end of our 20×3 to 100×8 mm range | ≈32 mm — one class deeper | Deeper sections toward 100×8 mm |
| Duty class | Light to standard duty | Standard duty | Heavy duty |
| Designed around | Foot traffic, light carts, maintenance access | Busier floors and storage traffic | Wheels, pallet trucks, high point loads |
| Span behavior | Shorter unsupported spans — more support framing | Spans stretch further between supports | Longest clear spans in the range |
| Bar spacing | 30 / 40 / 60 mm centers | 30 / 40 / 60 mm centers | Closer centers as loads rise |
| Typical use | Catwalks, mezzanines, walkways, light trench covers | Platforms, ramps, dock edges | Plant floors, roads, drainage under traffic |
| Best next step | Send spans and loads — section confirmed per quote | See the 1 1/4 class page | See heavy-duty grating |
Not sure which class fits your spans? Send your drawings — we will spec it inside the 24-hour quote.
Reading the section
Height, Thickness and Centers — What Names the Class
1 · Bar height names the class
One inch equals 25.4 mm, so 1 inch bar grating is the 25 mm class of bearing bars — near the light end of our 20×3 to 100×8 mm range. Height is what the designation talks about; it is the first number to match to your spans.
2 · Thickness and centers do the rest
The same height runs at different thicknesses across the range — a grating 30x3 mm section is the metric step just above this class — while 30 / 40 / 60 mm centers set the open area underfoot. The exact section is confirmed per quote.
3 · Finish and documents
Panels leave black or hot-dip galvanized to ASTM A123 / ISO 1461 referenced practice at a certified partner near our mill, with MTC EN 10204 3.1 and an inspection report on the shipment.
Why buy this class factory-direct
Why Buyers Order 1 Inch Bar Grating From the Mill
Factory pricing, FOB Tianjin
Direct bar grating pricing from the workshop that cuts and bands the panels — itemized per m² or per ton, FOB Tianjin as standard, EXW or CIF negotiable. No fixed price list, just your numbers.
Custom-cut to your drawings
Panel sizes, centers, notches and banding follow your drawings, with free drawing review inside the 24-hour quote. Fast samples keep the schedule moving — sample panels in 5–7 working days.
Lab tested, A123 galvanizing
Certified & tested, reports on request — mill test certificates to EN 10204 3.1 with every order, and hot-dip galvanizing to ASTM A123 / ISO 1461 referenced practice checked by coating sampling.
Applications
Where the 25 mm Class Works
Light-to-standard duty framing: open mesh that sheds water and debris wherever people, not wheels, set the load.
Catwalks & access walkways
Foot-traffic routes over plant and equipment — light panels, easy handling, fast install.
Mezzanine & storage floors
Light-cart traffic and picking routes; open mesh keeps dust and spills falling through.
Pedestrian trench covers
Light covers over drains and pits in foot zones — banded edges, optional close mesh.
Maintenance platforms
Access floors around machines, pumps and roof plant — galvanized for outdoor exposure.
Specifications
1 Inch Bar Grating Specifications
| Parameter | Class & range |
|---|---|
| Bearing bar class | ≈25 mm (1 in) height — light end of our 20×3 to 100×8 mm range |
| Bar thickness | 3 to 8 mm across the range, set per quote |
| Bar spacing | 30 / 40 / 60 mm centers |
| Cross bar | Twisted square or round, per specification |
| 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) |
| Metric neighbors | 30x3 mm step above · 20×3 mm lightest in range |
Tables, 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. The full size and weight tables for this class are provided with your quote, because the section is confirmed per project:
- 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
Welded panels produced to MBG 531 reference practice, with weld 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 Sizes, Cut and Banded to Your Drawings
Send your drawing
Spans, panel sizes, traffic type and quantities — or just photos and a sketch. Drawing review is free.
Quote within 24 hours
Section confirmed against your loads — itemized, FOB Tianjin as standard. Small trial orders welcome; MOQ is flexible.
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 spans, traffic type and quantities — an itemized quote lands within 24 hours, free drawing review included.
- 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 lines before you commit
Ask for the 1 inch bar grating tables by email — reply in 24 hours. sales@dtsteelladder.com or WhatsApp us
Request your quote
Five fields — we do the rest.
FAQ
Frequently Asked Questions
What does 1 inch mean in bar grating?
It refers to the bearing bar height. One inch equals 25.4 mm, so 1 inch bar grating is built on the 25 mm class of bearing bars — near the light end of our 20×3 to 100×8 mm range. The exact section, height and thickness together, is confirmed per quote against your spans and loads.
Can I get 1 inch bar grating in custom sizes?
Yes. Panels are cut and banded to your drawings at 30 / 40 / 60 mm centers, up to 1.25 m wide and 6 m long, in Q235B carbon steel or SS304 / SS316 stainless. Samples ship in 5–7 working days and production runs 15–25 working days after drawing confirmation.
When should I step up from a 1 inch bar?
When the floor sees wheels, pallet trucks or high point loads, or when you want longer unsupported spans and less support steel, move to a deeper class such as 1 1/4 in bars or heavy-duty sections toward 100×8 mm. Send your span and load details and we confirm the section within 24 hours.
Related pages
Related Specification Pages
1 1/4 Bar Grating
The next class deeper — when the 1 inch floor needs to carry more.
View page →I-Bar Grating
I-shaped bearing bars — weight savings at similar heights.
View page →Bearing Bar Grating
The bar itself: anatomy, orientation and how it carries load.
View page →Light Duty Grating
The duty class the 25 mm bar class usually serves.
View page →Heavy Duty Grating
Deeper bars and closer centers for wheels and point loads.
View page →Bar Grating
The full bar grating line — every class, process and finish.
View page →