Factory-direct steel gratings & stair treads, shipped worldwide
ANSI Standard Grating
We produce grating to ANSI, NAAMM, EN and AS standards. Compliance docs on request.
Itemized quote within 24 hours · Free drawing review included
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
ANSI explained
What ANSI Standard Grating Means
ANSI standard grating is the term project specs use for bar grating produced to American national practice — in practice the ANSI/NAAMM MBG 531 manual for standard-duty panels. We explain the honest position here, and we produce to it.
What ANSI is
ANSI is the American National Standards Institute. Grating produced to ANSI standard practice follows the ANSI/NAAMM MBG 531 manual for standard-duty steel bar grating, with MBG 532-24 covering heavy-duty panels.
Scope — US spec projects
ANSI standard grating covers platforms, walkways, trench covers and stair treads under pedestrian and light maintenance loads. Designations such as 19W4 and bar spacing come straight from the manual.
Key points for procurement
Tell us the designation and drawing — 19W4 or custom. We produce on our in-house lines and issue load data, DoC and material certificates with the order.
Compliance table
ANSI Requirements vs Our Produce-to Position
We produce to standards — we do not claim certifications we do not hold. Here is how each ANSI standard grating requirement maps to our manufacturing position.
| Requirement | What it asks | Our produce-to position |
|---|---|---|
| ANSI / NAAMM MBG 531 practice | Standard-duty bar grating per the US manual | Produced to MBG 531-24 on our in-house weld and press lines |
| Designation (e.g. 19W4) | Bearing bar depth and cross bar spacing | Matched to the called-out designation and verified against load tables |
| Bar size & spacing | Bars 20×3 mm upward, spacing 30 / 40 / 60 mm | Cut to your drawings with cross bar pitch per designation |
| Heavy-duty option | MBG 532 for wheel and forklift traffic | Thicker bars and closer centers per MBG 532-24 practice on request |
| Hot-dip galvanizing | Coating for outdoor panels | HDG to ASTM A123 / ISO 1461; coating thickness sampled per batch |
| Compliance documents | Traceable paperwork for the project file | DoC per ISO 17050 with every order; MTC EN 10204 3.1 and test reports on request |
Not sure which designation your project needs? Send your drawings — we will spec it inside the 24-hour quote.
How we support you
Produce to the Standard, Documents in Hand
Confirm your standard combo
Tell us the ANSI reference — MBG 531-24 standard duty or MBG 532-24 heavy duty — plus designation and coating. We confirm we can produce to it and quote the full document set.
Test on request
Third-party sampling and testing arranged for the agreed batch before shipping — reports issued to the project file.
DoC + MTC with the order
Every order ships with a Declaration of Conformity per ISO 17050, an MTC to EN 10204 Type 3.1 and a factory inspection report.
FAQ
Frequently Asked Questions
Can you provide compliance and DoC documents with an ANSI standard grating order?
Yes. Every order ships with a Declaration of Conformity prepared per ISO 17050 for the destination market, an MTC to EN 10204 Type 3.1 and a factory inspection report. Load data and coating thickness results are supplied on request.
What is the difference between producing to ANSI standard practice and third-party certification?
Producing to a standard means panels are manufactured and inspected to that standard's requirements. Certification is a separate third-party audit program. We state what we produce to and back it with documents and on-request testing — we do not claim certifications we do not hold.
What are your sample and production timelines?
Samples ship in 5–7 working days and mass production runs 15–25 working days after drawing confirmation, both including hot-dip galvanizing. Quote within 24 hours.
Factory-direct quote
Get a Factory Quote
Contact us for standard compliance support and a factory quote for your project.
- DoC per ISO 17050 and MTC EN 10204 3.1 with every order
- Third-party testing arranged on request for the agreed batch
- 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.
Related pages
Related Standards Pages
ANSI Grating Standards
The US standards landscape — NAAMM MBG 531 and MBG 532 in context.
View page →ANSI/NAAMM MBG 531 Grating
Standard-duty US bar grating practice behind most specs.
View page →MBG 534 Grating
Stainless steel and special-duty bar grating in the MBG family.
View page →OSHA Grating
Pedestrian safety requirements for grating access and platforms.
View page →ADA Compliant Grating
Close-mesh and accessible-route grating practice for comparison.
View page →Welded Steel Grating
The workhorse panel behind most structural specs.
View page →