Mutual Metal • Supply & sourcing
Five-Bar Raised PatternReference: GB/T 33974 · ASTM A786/A786M · DIN 59220

Five-bar industrial tread plate

Five parallel raised ribs per repeat pattern deliver reliable multi-directional slip resistance. Hot-rolled or cold-formed into carbon steel, 304/316 stainless steel, and 3003/6061 aluminum plate for severe commercial environments.

Available alloys
Carbon steel (A36 / S235JR)
Stainless steel 304 / 316L
Aluminum 3003-H22 / 6061-T6
Hot-dip galvanized finish optional
Five-bar checkered plate surface pattern
Standard sizesStandard Specifications

Standard sheet sizes may be available; availability is confirmed at quotation.

Browse fabricated stair treads

Engineering parameters

Reference standards: GB/T 33974 · ASTM A786/A786M · DIN 59220 (confirmed per project)
Pattern height
1.0 mm – 2.0 mm

Raised rib profile for drainage & positive grip

Gauge range
3/16 in to 1/2 in

4.5 mm to 12.7 mm structural base plate

Sheet dimensions
4 × 8 ft, 4 × 10 ft, 5 × 10 ft

Custom cut-to-length blanks available on order

Pattern pitch
5 parallel ribs / unit

Alternating 90° orientation across sheets

Field applications

Industrial platforms & walkways

Slip mitigation around machinery, process vessels, and wash bays.

Stair treads & nosings

Self-draining safety walking surfaces on interior and outdoor staircases.

Mezzanine flooring

Heavy wheel and pallet jack capability across elevated storage tiers.

Catwalks & service bridges

Consistent all-weather foot traction for plant maintenance staff.

Standard Specifications

Five-bar checkered plate specifications

Dimensional ranges, material alloys, and standard sheet configurations for industrial slip-resistant applications.

Gauge range & thickness

Metric and imperial plate base thickness

16 Gauge1.5 mm (0.059 in)
14 Gauge2.0 mm (0.078 in)
12 Gauge2.5 mm (0.098 in)
1/8 in Nominal3.0 mm (0.118 in)
3/16 in Nominal4.5 mm (0.177 in)
1/4 in Nominal6.0 mm (0.236 in)
3/8 in Heavy8.0 mm (0.315 in)
1/2 in Heavy10.0 mm (0.394 in)

Pattern height & spacing

Raised five-bar anti-skid dimensions

Bar projection height1.0 mm – 1.8 mm (typical, confirmed per project)
Bar bundle width32 mm – 38 mm (typical)
Pattern orientation90° alternating 5-bar
Slip resistanceConfirmed per project; DIN 51130 can be referenced as a test method
Surface coverageUniform cross-directional grip

Sheet dimensions

Standard sizes and cut-to-length

1000 x 2000 mm39.37 x 78.74 in (typical)
1219 x 2438 mm4 x 8 ft (typical standard)
1250 x 2500 mm49.21 x 98.42 in (typical)
1500 x 3000 mm5 x 10 ft (heavy duty)
Custom shearsCut-to-size stair treads & panels on request

Standard surface finishes

Protective and aesthetic surface states

Hot-rolled mill finishAs-rolled with light oil
Hot-dip galvanizedASTM A123/A123M · ISO 1461 · GB/T 13912 reference
Pickled & passivatedStainless acid treated
Bright mill finishClean unpolished aluminum
Powder coatedPolyester resin RAL color series

Theoretical weights

Approximate reference weights per square meter (typical, confirmed per project)

Steel 2.5 mm baseapprox. 21.6 kg/m² (4.4 lb/ft²)
Steel 3.0 mm baseapprox. 25.5 kg/m² (5.2 lb/ft²)
Steel 4.5 mm baseapprox. 37.3 kg/m² (7.6 lb/ft²)
Alum 3.0 mm baseapprox. 9.1 kg/m² (1.86 lb/ft²)
Alum 4.5 mm baseapprox. 13.2 kg/m² (2.70 lb/ft²)

Theoretical weights are calculated references for typical thickness and pattern. Applicable standards (GB/T 33974, ASTM A786/A786M, DIN 59220) and tolerances are confirmed per project and producing factory. Material documentation (such as mill test reports) on request, depends on product and producing factory.

Standards ReferenceCheckered Plate

Applicable standards

Listed as reference standards only, never certificates held by MutualMetal. The applicable standard, material grade, and documentation are confirmed per product and project.

Five-bar is a rolled pattern whose designation and weight tables differ between GB/T 33974, ASTM A786, and DIN 59220; applicable standard, pattern dimensions, and base plate tolerances are confirmed per project.

Product standards

GBChina
Chinese National Standards (GB)
  • GB/T 33974Hot-rolled checkered steel plate and strip
ASTMUnited States / International
ASTM International
ANSIUnited States
ANSI / NAAMM / EMMA

No direct product standard in this series; floor plate patterns and materials reference ASTM standards (e.g. ASTM A786), with walking surface safety referencing ANSI/ASSP A1264.2.

ISOInternational
International Organization for Standardization

No dedicated ISO checkered plate product standard; ISO 14122-2 applies as an application safety reference for walkway surfaces.

ENEurope / Germany
European Standards (EN / DIN)

Technical standards

GBChinese National Standards (GB)
  • GB/T 700Carbon structural steel
  • GB/T 13912Hot-dip galvanized coatings on metal products — technical requirements and test methods
ASTMASTM International
  • ASTM A36Structural carbon steel, bar and plate material
  • ASTM A240/A240MChromium and chromium-nickel stainless steel plate, sheet, and strip
  • ASTM B209/B209MAluminum and aluminum-alloy flat sheet, coiled sheet, and plate
  • ASTM A123/A123MZinc (hot-dip galvanized) coatings on iron and steel products
ISOInternational Organization for Standardization
  • ISO 1461Hot-dip galvanized coatings on fabricated iron and steel articles — specifications and test methods
ENEuropean Standards (EN / DIN)
  • EN 10025-2Non-alloy structural steels — technical delivery conditions
Need an in-depth cross-system comparison of GB, ASTM, ANSI, ISO, and EN specifications?
Compare all standards on the Standards Map
Checkered Plate Supply

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Drawing & specification review

Drawings and specifications reviewed by our team.

Documentation on request

Material test reports can be requested at quotation where available.

Quote timing confirmed per project

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