ZeAllgrate FRP Structural Profiles — Complete Catalog & Section Properties
High stiffness-to-weight FRP framing members
Pultruded structural profiles carry axial and bending loads in support framing, platforms, bridges and conveyor supports — ≈ 70% glass by weight.
Shape range
I-beams, wide-flange beams, channels, equal-leg angles, square/round tubes, flat bars and round rods.
High stiffness-to-weight
≈ 70% unidirectional glass gives longitudinal modulus ~22–28 GPa at a quarter of steel density.
Corrosion-proof
Non-corroding, non-conductive and non-sparking — ideal for chemical, marine and electrical environments.
Section properties (computed from nominal cross-sections)
Ix / Zx about the strong axis; Iy / Zy about the weak axis. Weight per linear metre at ≈ 1.85 g/cm³. Zx = Ix / (h/2) holds for every row.
| Designation | Depth (mm) | Flange Width (mm) | Web Thick. (mm) | Flange Thick. (mm) | Weight (kg/m) | Area (cm²) | Ix (cm⁴) | Zx (cm³) | Iy (cm⁴) | Zy (cm³) |
|---|---|---|---|---|---|---|---|---|---|---|
| I-100×50 | 100 | 50 | 6 | 8 | 2.35 | 13.0 | 199 | 39.9 | 16.8 | 6.7 |
| I-150×75 | 150 | 75 | 6 | 10 | 4.10 | 22.8 | 846 | 112.8 | 70.6 | 18.8 |
| I-200×100 | 200 | 100 | 8 | 10 | 6.19 | 34.4 | 2195 | 219.5 | 167 | 33.5 |
| I-250×125 | 250 | 125 | 8 | 12 | 8.65 | 48.1 | 5021 | 401.7 | 392 | 62.7 |
| WF-150×150 | 150 | 150 | 8 | 10 | 7.27 | 40.4 | 1619 | 215.9 | 1619 | 215.9 |
| WF-200×200 | 200 | 200 | 10 | 12 | 11.81 | 65.6 | 4701 | 470.1 | 4701 | 470.1 |
| WF-250×250 | 250 | 250 | 12 | 15 | 18.25 | 101.4 | 11434 | 914.7 | 11434 | 914.7 |
Section properties are computed from nominal pultruded cross-sections and are internally consistent. Use certified EI data for final design; allowable bending stress ≈ 69 MPa (F.S. ≈ 3) per industry practice.
Secondary shapes and section properties
Ix / Zx about the principal strong axis. Angles are equal-leg; for angles, Zx uses the extreme fiber from the centroid.
| Profile | Dimensions (mm) | Weight (kg/m) | Area (cm²) | Ix (cm⁴) | Zx (cm³) |
|---|---|---|---|---|---|
| Channel C-100×50 | 100 × 50 × 6 mm web | 2.52 | 14.0 | 220 | 43.9 |
| Channel C-150×75 | 150 × 75 × 6 mm web | 4.32 | 24.0 | 905 | 120.7 |
| Channel C-200×100 | 200 × 100 × 8 mm web | 6.48 | 36.0 | 2340 | 234 |
| Angle L-50×50×5 | 50 × 50 × 5 mm | 0.86 | 4.75 | 11.3 | 3.2 |
| Angle L-75×75×6 | 75 × 75 × 6 mm | 1.56 | 8.64 | 46.9 | 8.7 |
| Angle L-100×100×8 | 100 × 100 × 8 mm | 2.76 | 15.36 | 148 | 20.6 |
| Square Tube 50×50×4 | 50 × 50 × 4 mm wall | 1.32 | 7.36 | 26.2 | 10.5 |
| Square Tube 75×75×5 | 75 × 75 × 5 mm wall | 2.52 | 14.0 | 114.9 | 30.6 |
| Square Tube 100×100×6 | 100 × 100 × 6 mm wall | 4.06 | 22.56 | 333.6 | 66.7 |
| Round Tube Ø50×4 | Ø50 × 4 mm wall | 1.04 | 5.78 | 15.4 | 6.2 |
| Round Tube Ø75×5 | Ø75 × 5 mm wall | 1.98 | 11.0 | 67.7 | 18.0 |
| Flat Bar 50×6 | 50 × 6 mm | 0.54 | 3.0 | 6.25 | 2.5 |
| Flat Bar 75×6 | 75 × 6 mm | 0.81 | 4.5 | 21.1 | 5.6 |
| Flat Bar 100×8 | 100 × 8 mm | 1.44 | 8.0 | 66.7 | 13.3 |
| Round Rod Ø20 | Ø20 mm solid | 0.57 | 3.14 | 0.79 | 0.79 |
| Round Rod Ø25 | Ø25 mm solid | 0.88 | 4.91 | 1.92 | 1.53 |
| Round Rod Ø32 | Ø32 mm solid | 1.45 | 8.04 | 5.15 | 3.22 |
Typical unidirectional pultruded laminate
| Property | Test Method | Typical Value |
|---|---|---|
| Glass content | Ignition loss | 70% ± 5% by weight |
| Tensile strength, longitudinal | ASTM D638 | ≈ 350 – 450 MPa |
| Flexural strength, longitudinal | ASTM D790 | ≈ 400 – 500 MPa |
| Flexural modulus, longitudinal | ASTM D790 | ≈ 22,000 – 28,000 MPa |
| Compressive strength, longitudinal | ASTM D695 | ≈ 250 – 300 MPa |
| Density | ASTM D792 | 1.7 – 1.9 g/cm³ |
| CTE, longitudinal | ASTM D696 | ≈ 5 × 10⁻⁶ /°C |
| Dielectric strength | ASTM D149 | > 10 kV/mm |
ZeAll ISO
General structural grade — atmospheric corrosion, water, mild acids/bases.
ZeAll VE
Vinyl ester — chemical, coastal and offshore; excellent corrosion resistance.
ZeAll FR
Fire-retardant — E84 Class A / low smoke; metro, marine, enclosed structures.
ZeAll Novolac VE
Novolac vinyl ester — strong oxidisers, high-temperature acids, chlorine service.
Simply-supported, deflection limit L/240 (typical beam limit)
Allowable UDL (kN/m) by span, including a long-term safety factor for creep. Short spans are stress-limited; long spans are deflection-limited.
| I-Beam | 1.0 m | 1.5 m | 2.0 m | 2.5 m | 3.0 m |
|---|---|---|---|---|---|
| I-150×75 | 26.0 | 7.7 | 3.3 | 1.7 | 1.0 |
| I-200×100 | 67.5 | 20.0 | 8.4 | 4.3 | 2.5 |
| I-250×125 | 154 | 45.7 | 19.3 | 9.9 | 5.7 |
Computed from δ = 5wL⁴/(384EI) with E ≈ 24 GPa and a long-term factor; indicative only. Verify with certified section data and local deflection/stress limits.
Pultruded I-beam with labeled dimensions
Schematic, not to scale.
Bolted, bonded and support details
FRP profiles are typically bolted or adhesively bonded; never weld.
Bolted connections
Use oversized holes (+2 mm), minimum edge distance 2× bolt diameter, steel side plates / FRP angle brackets; torque to 25 – 30 N·m.
Adhesive bonding
Vinyl ester / epoxy bonding for flush joints; surface-abrade, apply per resin datasheet; design lap length for shear.
Bearing & stress
Allowable bearing stress ≈ 69 MPa (F.S. ≈ 3); spread bearing loads with side plates to avoid local crushing.
Support design
Provide lateral-torsional restraint at supports; brace compression flange to prevent lateral-torsional buckling on long spans.
Platform support framing
Beams and columns for FRP grating platforms in chemical plants.
Conveyor supports
Corrosion-free support frames over wash-down and corrosive process lines.
Pipe racks
Non-conductive, non-corroding racks for corrosive piping and cable trays.
Bridge superstructure
Pedestrian bridge girders and decks where steel would corrode.
Equipment skids
Light, stiff skid frames for pumps, filters and treatment units.
Cooling tower structure
Fan decks, access platforms and support frames in moist, chemical service.
Section properties are computed from nominal cross-sections for specification-level sizing. ZeAllgrate supplies certified section data and connection details. Contact [email protected].
Selecting the Right Section
| Section | Typical Use | Why It Is Chosen |
|---|---|---|
| I-beam | Platform support beams, long-span framing | High stiffness-to-weight for bending loads |
| Channel | Edge rails, equipment frames, screen supports | Easy bolting to flat faces; torsional stiffness |
| Angle | Bracing, brackets, edge protection | Light, cheap corner connection member |
| Square / round tube | Handrail posts, legs, space frames | Uniform section, easy cutting and fitting |
| Flat bar / plate | Grating borders, stiffeners, gussets | Simple bearing surface for grating and clips |
Dimensional Tolerances and Quality
Pultruded profiles are supplied to standard manufacturing tolerances: section dimensions ±1.5–2% or ±0.8–1.5 mm (whichever is greater), length cut tolerances typically ±3 mm, and straightness checked over the length. Verify against the project drawing before fabrication — cut lengths, hole patterns and notches are usually the tolerance-critical items in a framing package. Each profile lot carries batch traceability to the raw materials and QC records, the same documentation discipline as ZeAllgrate grating.
Connection and Framing Practice
- Bolted joints — stainless steel bolts with oversize clearance; never over-torque beyond the recommended value (see the connection design guide).
- Adhesive bonding — structural adhesives for permanent joints; surface-prep and cure per the adhesive manufacturer.
- Combined systems — profiles frame the structure; ZeAllgrate grating, clips and handrail complete the access package from one supplier.
- Bearing — always provide full-section bearing at supports; partial seats concentrate stress at the web.
- Bolted joints — stainless steel bolts with oversize clearance; never over-torque beyond the recommended value (see the connection design guide).
- Adhesive bonding — structural adhesives for permanent joints; surface-prep and cure per the adhesive manufacturer.
- Combined systems — profiles frame the structure; ZeAllgrate grating, clips and handrail complete the access package from one supplier.
- Bearing — always provide full-section bearing at supports; partial seats concentrate stress at the web.
Approved by Industry Bodies, Tested to International Standards
Every ZeAllgrate shipment is backed by documented quality systems, marine approvals and independent third-party verification.
ISO 9001:2015
Certified quality management system — since 2004.
DNV & ABS Marine
Marine-grade grating for offshore platforms and vessel decks.
SGS & Intertek
Independent third-party inspection and load testing on request.
OSHA 1910.23
Handrail systems load-tested to US federal requirements.
Material certificates, COA, ASTM test reports and compliance documentation supplied with every order. View certifications →
Need a Structural Shape Take-Off?
Send your beam spans, loads and deflection limit — we return a shaped schedule (I-beams, channels, angles) with section data and connection details within 24 hours.