Serrated Steel Grating — Maximum Slip Resistance
Smooth steel grating performs well in dry plants, but the moment a walkway sees rain, hydraulic oil, sea spray, or ice, traction becomes a safety issue. Serrated steel grating answers that problem directly: the top edge of every bearing bar is notched into a row of teeth, so each step lands on dozens of sharp contact points instead of a flat strip of steel. The result is a walking surface that keeps its grip even when contaminated — which is why EPC contractors and plant engineers specify serrated grating almost by default for offshore platforms, refineries, and outdoor stair treads.
GoGrating fabricates serrated grating to project specifications at our works in Anping, Hebei — the wire-mesh and grating capital that produces the majority of China's output, with 800+ fabrication plants within 30 km. Every order is custom-made: panel sizes, bar sections, pitch series, banding, cutouts, and surface treatment all follow your drawings. Browse the full steel grating range, or send drawings or CAD files straight to our team via Request a Quote.
What is Serrated Steel Grating?
Serrated grating starts as standard welded or press-locked bar grating. Before assembly, the flat bearing bars pass through a notching process that cuts a uniform tooth pattern into the top edge — the serrations face upward in the finished panel, while the cross bars remain plain. The tooth geometry follows the conventions of ANSI/NAAMM MBG 531 and YB/T 4001.1, and because serration removes a small amount of section from the bar, engineers typically specify one size deeper bearing bar than the equivalent smooth grating to maintain the same load rating. We supply engineered load tables for the exact bar section and span on request rather than quoting generic numbers.
Serration is a surface option, not a separate product family — virtually any bearing bar grating we make can be ordered serrated, in carbon steel (hot-dip galvanized to ASTM A123, painted, or untreated) or stainless 304/316 for corrosive and hygienic environments. For chemical plants where even stainless struggles, a serrated or gritted FRP grating panel is often the better answer; we produce both lines and can advise which suits your service conditions.
Serrated Grating Specifications
Serrated grating is built around the same spec framework as plain grating. Bearing bars range from 20×3 mm up to 100×9 mm; pitch follows the 19-space (≈30 mm) and 15-space (≈24 mm) series under ANSI/NAAMM MBG 531, or the 30/40 mm pitch series under YB/T 4001.1. Cross bars are typically set at 50 mm or 100 mm centres. Panels are cut, banded, and notched to your layout drawings — there are no stock SKUs, so dimensions are limited only by handling and transport, not by a catalogue.
On slip resistance: the serrated profile materially increases traction over smooth grating and is the surface generally specified to meet OSHA walking-working-surface requirements in wet or oily areas. Slip performance always depends on footwear, contaminant, and maintenance, so for projects that require certified slip ratings or stamped load calculations, tell us the governing standard and we will document compliance for your submittal. All production runs under ISO 9001, with CE marking and mill certificates available for export documentation.
Serrated Grating Applications
The strongest case for serration is anywhere the deck gets contaminated. Wet environments — wastewater treatment plants, washdown areas, coastal walkways, cooling towers — are the classic use. Oily environments follow close behind: refinery and petrochemical platforms, machine-shop floors, and lube-oil skids where smooth grating becomes hazardous within weeks of commissioning. Offshore platforms combine both problems with salt corrosion, which is why serrated, hot-dip galvanized grating to ASTM A123 (or stainless 316) is the default deck specification for oil and gas projects across the Middle East and Southeast Asia.
Stair treads deserve special mention: serrated treads with checker-plate or abrasive nosing are the standard for industrial stairs, and we fabricate them to order with welded carrier plates ready for bolting. See more end uses on our applications page, or send your platform layout, tread schedule, or CAD files for a line-itemed offer — request a quote and our engineers will respond with specifications, not a sales script.
| Bearing bar size | 20×3 mm to 100×9 mm flat bar, serrated top edge |
| Bearing bar pitch | 19-space (≈30 mm) / 15-space (≈24 mm); 30 / 40 mm series per YB/T 4001.1 |
| Cross bar pitch | 50 mm or 100 mm typical |
| Fabrication | Pressure-welded or press-locked, made to order |
| Material | Carbon steel Q235 / stainless steel 304, 316 |
| Surface treatment | Hot-dip galvanized (ASTM A123), painted, untreated, or stainless |
| Panel size | Cut and banded to project drawings — no stock sizes |
| Standards | YB/T 4001.1, ANSI/NAAMM MBG 531, ASTM A123, ISO 9001, CE |
| Load data | Engineered load tables per bar section and span — contact us |
- Notched bearing-bar teeth for maximum slip resistance in wet and oily service
- Made to order — bar section, pitch, panel sizes, and cutouts per your drawings
- Hot-dip galvanized to ASTM A123 for offshore and outdoor durability
- Carbon steel or stainless 304/316 options
- Manufactured to YB/T 4001.1 and ANSI/NAAMM MBG 531
- Factory-direct export from Anping, China under ISO 9001
Frequently Asked Questions
Can you fabricate serrated grating from our drawings or CAD files?
Yes — that is our standard workflow. Send DWG, DXF, PDF, or even marked-up sketches with panel layouts, cutouts, and banding details through our Request a Quote page. Our engineers confirm bar sections, pitch series, and tolerances against YB/T 4001.1 or ANSI/NAAMM MBG 531 before production.
What is the minimum order quantity for serrated steel grating?
Because every order is custom-fabricated rather than pulled from stock, MOQ is flexible and depends on bar section and finish. Container-load orders get the best freight economics for export, but smaller project quantities are regularly produced — tell us your bill of materials and we will confirm feasibility.
Does serrated grating carry the same load as smooth grating?
Serration removes a small amount of material from the top of each bearing bar, so a serrated panel rates slightly below the equivalent smooth section. The usual practice is to specify the next deeper bar. We provide engineered load tables for your exact span and bar size on request.
What surface treatments are available, and which standard applies?
Hot-dip galvanizing to ASTM A123 is the default for outdoor, marine, and offshore service. Untreated (black) and painted finishes suit indoor or customer-coated applications, and stainless 304/316 is available for corrosive or hygienic environments. Mill and galvanizing certificates are supplied with export shipments.