# Carbon Steel Bar Grating

![Carbon steel bar grating panel for industrial projects](https://qymetaltech.com/wp-content/uploads/2026/05/stainless-steel-bar-grating-4.webp)









Steel Grating

Carbon steel bar grating is often selected for platforms, walkways, trench covers and general industrial floors before a final surface finish is chosen. The RFQ should confirm construction, bearing bar size, load, fabrication and whether the panel will be mill finish, painted or galvanized.

RFQ quick details





**Material**



**Construction**



**Bearing bar**



**Surface finish**



**Fabrication**

 



[Send RFQ](https://qymetaltech.com/carbon-steel-bar-grating/#rfq)[Chat on WhatsApp](https://wa.me/8615152256390)



 **Email** sales@qymetaltech.com **Files** PDF, DWG, DXF, sketches and product photos are welcome. 

 

 

 

 

 





Product overview

## Carbon Steel Bar Grating selection for project RFQs

QY Metal Tech supports international project buyers with drawing-based RFQ review, custom fabrication discussion, surface finish selection and export packing notes from Wuxi, Jiangsu, China.

 



### Carbon Steel Bar Grating specification path

 

| Material | Carbon steel is used for economical strength when the finish is selected by environment. |
|---|---|
| Construction | Welded or press-locked construction can be reviewed by appearance and project requirement. |
| Bearing bar | Bar height, thickness and spacing are selected by span and load. |
| Surface finish | Mill finish, painted, powder coated or hot-dip galvanized finish can be discussed. |
| Fabrication | Cutouts, banding, notches, toe plates and panel marks should be completed before finish when required. |
| Packing | Panel bundles, marks and loading sequence help large projects install by area. |

 

 





Standards reference

## Standards and finish references can be reviewed by project requirement

- Steel grating can be reviewed according to drawings and standards such as YB/T 4001.1, ANSI/NAAMM MBG 531 or BS 4592 when required.
- Hot-dip galvanizing can be specified according to ISO 1461 or ASTM A123/A123M when a defined zinc coating reference is needed.
- Platform, stair and access projects may refer to ISO 14122 or local safety requirements for walking surfaces and guardrail interfaces.
- Final specification should follow project drawings, load notes, local codes and buyer approval documents.

 



Specification examples

## Common Carbon Steel Bar Grating model expressions

 

| Welded carbon steel grating | Economical carbon steel bar grating for platforms, trench covers and industrial floors. |
|---|---|
| Mill finish panel | Uncoated carbon steel option when later painting or indoor use is planned. |
| Painted panel | Primer or paint finish can be reviewed when hot-dip galvanizing is not required. |
| Fabricated carbon steel panel | Cutouts, banding and toe plates completed before final finish. |

Use these examples as RFQ shorthand, then confirm final dimensions, load, material, finish and drawings before production.

 

 

 

 



Applications

## Carbon Steel Bar Grating applications and project references

These references help buyers connect carbon steel bar grating specifications with real site conditions, fabrication details, packing requirements and installation expectations.





![Carbon steel bar grating platform application](https://qymetaltech.com/wp-content/uploads/qymt-img-20261017/qymt-platform-steel-grating-20.webp)

### Factory access floors

Carbon steel grating for platforms, catwalks and maintenance areas.







![Carbon steel bar grating trench cover application](https://qymetaltech.com/wp-content/uploads/qymt-img-20261017/qymt-steel-grating-trench-covers-02.webp)

### Trench and drain covers

Carbon steel grating can be reviewed for removable drainage covers.









### Export packing

Panel marks and bundle sequence can follow the project drawing list.







 

 

 

## Steel grating technical references

Use the load tables with their stated standard editions and design assumptions. The separate 11-W-4 specification describes a different bearing-bar spacing from 19-W-4 and is not an interchangeable load rating. Confirm the required specification and project loads with the quotation.

- [Steel grating load table (Chinese tables) (PDF · Chinese · YB/T 4001.1-2007 · 1.4 MB)](https://qymetaltech.com/wp-content/uploads/2026/05/QY-Metal-Tech-Steel-Grating-Load-Table.pdf)
- [11-W-4 welded specification reference (English) (PDF · English · 642 KB)](https://qymetaltech.com/wp-content/uploads/2026/05/qymt-11-w-4-welded-steel-grating-3-part-specification.pdf)



### Technical checks before quotation

- Confirm bearing-bar center distance, cross-bar type and panel dimensions.
- Select the load-table row from clear span, support condition, load direction and deflection limit.
- Confirm material and finish, including galvanized, painted or stainless requirements.











RFQ checklist

## Send carbon steel bar grating details for a faster quote

For faster quotation support, include dimensions, material, finish, application, quantity and destination for carbon steel bar grating. Drawings, sketches, replacement photos or old specifications are welcome when the product must match an existing project.



[Send RFQ](https://qymetaltech.com/contact/#rfq)[View Resources](https://qymetaltech.com/resources/)

 

 

### Carbon Steel Bar Grating RFQ checklist

- Carbon steel grade or buyer material requirement
- Bearing bar size, spacing, support span and load
- Finish route: mill, painted, powder coated or galvanized
- Drawings, fabrication details, quantity and destination

 

 

 

 





FAQ

## Carbon Steel Bar Grating buyer questions

 

What is carbon steel bar grating used for?

Industrial platforms, walkways, catwalks, trench and drain covers, and maintenance floors.



Which finishes are available for carbon steel grating?

Mill finish (black steel), primer or paint, powder coating and hot-dip galvanizing. Choose by environment: galvanizing outdoors, paint or mill finish for dry indoor areas or where painting is done on site.



Can untreated carbon steel grating be used outdoors?

It is not recommended. Uncoated steel rusts outdoors, so outdoor carbon steel grating is normally hot-dip galvanized or otherwise protected.



Welded or press-locked carbon steel grating: which one?

Welded grating is the economical choice for industrial floors and platforms. Press-locked grating gives a cleaner, more uniform grid where appearance matters.



Is fabrication done before the finish?

Yes. Cutouts, banding, notches and toe plates are completed first, then the panels are painted or galvanized.



Can I specify a steel grade?

Yes. Our span guide is based on Q235. If your project names another grade or material standard, state it in the RFQ so it can be reviewed.

 

 



Related paths

### Continue from this product



[Steel Bar Grating](https://qymetaltech.com/steel-bar-grating/)[Galvanized Steel Grating](https://qymetaltech.com/galvanized-steel-grating/)[Press-Locked Steel Grating](https://qymetaltech.com/press-locked-steel-grating/)[Industrial Platform Grating](https://qymetaltech.com/industrial-platform-grating/)

 



### Need a practical carbon steel bar grating quotation?

Send drawings, specifications, quantity, destination and packing notes. We will review the details before replying with quotation support.



[Send Project RFQ](https://qymetaltech.com/carbon-steel-bar-grating/#rfq)

 

 

 

 

 



Quick span guide

## Recommended maximum span by model (Q235, /30/100)

Span at which a 4 kN/m² uniform load gives 4 mm deflection, calculated with the YB/T 4001.1—2019 Annex C method.



| Model | Bearing bar | Recommended max. span |
|---|---|---|
| G255/30/100 | 25 × 5 mm | **1260 mm** |
| G325/30/100 | 32 × 5 mm | **1520 mm** |
| G405/30/100 | 40 × 5 mm | **1790 mm** |
| G505/30/100 | 50 × 5 mm | **2120 mm** |
| G605/30/100 | 60 × 5 mm | **2430 mm** |



[Full load table with uniform and line loads →](https://qymetaltech.com/resources/steel-grating-load-table/#q235-load-table)









Selection path

## Specification, data and project references





### 1 · Check technical data

- [Steel grating load table](https://qymetaltech.com/resources/steel-grating-load-table/)
- [Load, span and deflection guide](https://qymetaltech.com/steel-grating-load-table-support-span-rfq/)
- [How to choose steel grating](https://qymetaltech.com/resources/how-to-choose-steel-grating/)
- [Steel grating weight calculator and chart](https://qymetaltech.com/resources/steel-grating-weight-chart/)





### 2 · See project references

- [Factory walkway project](https://qymetaltech.com/projects/#industrial-access)
- [Mixed grating export loading](https://qymetaltech.com/projects/#export-packing)
- [All project references](https://qymetaltech.com/projects/)





### 3 · Datasheet and quotation

- [Send drawings for a quotation](https://qymetaltech.com/carbon-steel-bar-grating/#rfq)













### Order terms

- MOQ: 50 pcs (panels, rolls or pieces)
- Samples available; sample and freight costs paid by the buyer
- Payment: 30% deposit, 70% before shipment
- Lead time: usually 30 days ex-works after deposit and drawing approval
- Quotation in 24–48 hours on working days
- Drawings: PDF, DWG, DXF, JPG, PNG, WebP up to 12 MB











RFQ form

## Request Carbon Steel Bar Grating quotation

Upload drawings if available. Include product size, material, finish, quantity, destination and application notes for a faster technical response.





**Drawings welcome**PDF, DWG, DXF, photos or replacement notes are useful.



**Fast technical response**Clear specifications and quantity help us review faster.



**Export packing support**Labels, bundle marks and packing groups can follow your project.

 

 



 

 

 











Carbon steel grating reference

## Carbon steel bar grating details before finish selection

 

Carbon steel grating is often selected first by strength and geometry, then matched with galvanized, painted or untreated finish according to the project environment.

 





### RFQ parameters

 

| Steel base | Confirm carbon steel material requirement if the project has a named standard. |
|---|---|
| Bar geometry | Bearing bar height, thickness, spacing and cross bar pitch define the grating type. |
| Fabrication | Cutouts, banding, toe plates and special panel sizes should be marked on drawings. |
| Finish decision | Hot-dip galvanizing, painting or black steel should be selected by site exposure. |
| Packing | Bundle marks and panel lists help installers identify panels. |

 





![Carbon steel bar grating panel](https://qymetaltech.com/wp-content/uploads/qymt-img-20261017/qymt-steel-grating-details-05.webp)

### Carbon steel panels

Base steel grating panels for custom fabrication and finishing.







![Galvanized carbon steel grating platform](https://qymetaltech.com/wp-content/uploads/2026/05/platform-steel-grating-3.webp)

### Galvanized after fabrication

Outdoor projects often finish carbon steel grating by hot-dip galvanizing.







![Factory quality control for carbon steel grating](https://qymetaltech.com/wp-content/uploads/2026/05/qymt-about-welding-fabrication-workshop.webp)

### Factory checks

Dimensions and fabrication details are reviewed before finish and packing.







 





### Useful internal references

These pages help buyers compare related products, check finish options and prepare a clearer RFQ.



[Galvanized Steel Grating Guide](https://qymetaltech.com/resources/galvanized-steel-grating-guide/)[Steel Grating Weight Chart](https://qymetaltech.com/resources/steel-grating-weight-chart/)[Steel Bar Grating](https://qymetaltech.com/steel-bar-grating/)[Galvanized Steel Grating](https://qymetaltech.com/galvanized-steel-grating/)

 

 

 







Related links

## Related product and RFQ resources

- [Steel grating product catalog](https://qymetaltech.com/products/#steel-grating-metal-flooring)Browse the related product family section.
- [Steel grating topic entry](https://qymetaltech.com/steel-bar-grating/)Steel grating family page for platform grating, stair treads, drain covers, serrated grating, galvanized grating and drawing-based RFQs.
- [19-W-4 steel grating](https://qymetaltech.com/19-w-4-steel-grating/)Compare material, bar spacing and project specification details.
- [Steel Grating RFQ Checklist for International Buyers](https://qymetaltech.com/steel-grating-rfq-checklist-international-buyers/)RFQ checklist for steel grating buyers covering application, panel or opening size, bearing bar direction, support span, finish, quantity, packing, destination and drawings.
- [FRP Grating vs Galvanized Steel Grating for Wet Areas](https://qymetaltech.com/frp-grating-vs-galvanized-steel-grating-wet-areas/)Comparison guide for wet or corrosive area grating selection, covering FRP grating and galvanized steel grating by environment, traffic, support, cutouts and quotation details.
- [How to Choose Steel Grating for Industrial Platforms](https://qymetaltech.com/how-to-choose-steel-grating-industrial-platforms/)Industrial platform grating selection guide covering platform use, support span, bearing direction, panel layout, finish, cutouts, fixing clips, drawings and RFQ details.
- [Send project RFQ details](https://qymetaltech.com/contact/#rfq)Send drawings, dimensions, finish notes, quantity and destination for review.





 

## Factory verification and order terms





### Video factory visits by appointment

Video factory visits can be arranged in advance. Contact our sales team to agree a time, platform and accessible production, inspection or packing areas. Other customers’ information and confidential areas are not shown.





### Lead time: usually 30 days ex-works

For regular orders, production usually takes 30 days ex-works, counted from receipt of the deposit and approval of the drawings. Larger or special orders, and stock availability, are confirmed in the written quotation. Production and transport times are stated separately in the quotation or contract.





### Written quotation and delivery terms

Trade terms are agreed for each order and logistics arrangement. The written quotation specifies the applicable Incoterms® 2020 rule, named delivery place or port of shipment, and whether freight, insurance and taxes are included. For containers handed to a carrier before vessel loading, FCA is considered rather than automatically using FOB.





### Quality concerns and corrective action

Please provide the order number, affected quantity, photos or video, and relevant measurements or inspection records when reporting a quality concern. If responsibility is confirmed to lie with us, a remedy such as repair, additional supply, replacement, refund or price adjustment is agreed under the contract. Costs and the action plan are confirmed in writing; no unconditional return or fixed resolution period is promised.





[Check our company registration details](https://qymetaltech.com/about/#verify-qy-metal-tech)

Source: https://qymetaltech.com/carbon-steel-bar-grating/