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Technical catalogs, selection data and engineering references for project specification, procurement and RFQ preparation.

2026 data edition

Technical catalog series

Common metric specifications, component interfaces and RFQ inputs prepared for Southeast Asia and Middle East projects.

Steel Bar Grating

Bearing bars, pitch, mesh, span direction, banding, finishes and fixing selection.

11 pages · searchable PDF · 2.25 MB

Download steel grating catalog

Platform Systems

Grating, support frames, guardrails, toe plates, access interfaces and quotation inputs.

12 pages · searchable PDF · 2.34 MB

Download platform catalog

Walkway Systems

Common walkway widths, grating selection, rail data, supports, clips and inspection points.

13 pages · searchable PDF · 2.45 MB

Download walkway catalog

Stair Access Systems

Tread widths and depths, nosing, stair geometry, side plates, landings and handrails.

14 pages · searchable PDF · 2.50 MB

Download stair catalog

Trench Cover Systems

Pedestrian and vehicle-duty selection, support seats, frames, restraints and design checks.

14 pages · searchable PDF · 2.76 MB

Download trench cover catalog

Searchable online specification summaries

Use the web pages below to copy common models and RFQ data without opening a PDF.

Steel grating data How to specify Trench cover data FRP data Platform systems Walkway systems Stair systems

Catalog values are selection starting points. Final bar size, span, load capacity, material and finish must be confirmed against the project drawing and governing specification.

Additional engineering references

Load tables, calculation notes and supplementary product data.

Document	Format	Size	Language	Updated	Action
Grating Load Tech Load-focused technical reference	PDF	0.22 MB	English	2026-08-11	Download load tables (PDF)
Formulas for Calculating Load and Deflection Engineering calculation formulas	PDF	0.13 MB	English	2026-08-11	Download load formulas (PDF)
FRP Grating Load FRP load reference	PDF	0.11 MB	English	2026-08-11	Download FRP grating data (PDF)
BALL PROOF Ball-proof grating reference	PDF	0.08 MB	English	2026-08-11	Download ball-proof grating data (PDF)
NAAMM MBG 531-24 Current publisher record for the Metal Bar Grating Manual	Official web page	—	English	Current edition	View at NAAMM
Steel Grating Catalog (Online) Web page version with load/reference tables	HTML	—	English	2026-03	View steel grating catalog

Reference documents remain available for preliminary review. Request project-specific load confirmation where required.

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