38mm Mesh Molded FRP / GRP Grating
38mm Mesh Molded Grating 鈥?the workhorse industrial panel
The 38 脳 38 mm mesh is the most widely specified molded configuration: a balanced bi-directional grid with 70% open area, ideal for chemical plants, wastewater walkways, platforms and general industrial access where good drainage and corrosion resistance matter.
70% open area
Excellent drainage and ventilation while retaining a rigid, walkable grid that prevents ponding and product build-up.
18.6 kg/m虏
Light enough for manual handling 鈥?roughly a quarter the weight of equivalent steel panels, cutting transport and installation cost.
Bi-directional strength
Compression molding locks glass roving in both directions, so load is carried reliably regardless of bar orientation.
| Standard panel size | 1220 脳 3660 mm (鈮?4' 脳 12') 鈥?most stocked |
| Other standard panels | 1000 脳 3000 mm 路 1220 脳 2440 mm 路 cut-to-size available |
| Standard meshes | 38 脳 38 mm (rectangular / square) 路 19 脳 19 mm mini-mesh 路 25 脳 100 mm rectangular |
38mm configurations 鈥?section properties per metre of width
I = moment of inertia per m width; Z = section modulus per m width. Panel weight based on 1220 脳 3660 mm (4.465 m虏). Spans/loads are indicative for pedestrian service.
| Thickness | Mesh | Open Area | Weight (kg/m虏) | Panel Weight (kg, 1220脳3660) | I (cm鈦?m) | Z (cm鲁/m) | Max Span @ L/200 (mm) | Max Uniform Load @ 1 m span (kN/m虏) |
|---|---|---|---|---|---|---|---|---|
| 38 mm | 38 脳 38 mm | 70% | 18.6 | 83.0 | 69.6 | 34.9 | 鈮?1250 | 鈮?23.5 |
| 38 mm | 19 脳 19 mm (mini-mesh) | 44% | 22.0 | 98.2 | 97.5 | 42.6 | 鈮?1200 | 鈮?26 |
Molded section properties (I, Z, weight, open area) are consistent with industry molded-grating technical catalogs (manufacturer data); spans and uniform loads are indicative and derived from manufacturer load tables for pedestrian live load. Verify against certified load/span charts for your exact resin and surface.
Typical laminate values per ASTM test methods
Values are typical production-panel properties. Use characteristic (minimum) design values per ASTM D7290 for engineering design.
| Property | Test Method | Typical Value |
|---|---|---|
| Density | ASTM D792 | 1.8 鈥?2.0 g/cm鲁 (鈮?0.065 鈥?0.072 lb/in鲁) |
| Glass content | Combustion / ignition loss | 33% 卤 3% by weight |
| Tensile strength (laminate) | ASTM D638 | 鈮?80 鈥?100 MPa (typical) |
| Flexural strength (laminate) | ASTM D790 | 鈮?150 鈥?200 MPa (typical) |
| Flexural modulus | ASTM D790 | 鈮?10,000 鈥?12,000 MPa (typical) |
| Compressive strength | ASTM D695 | 鈮?150 鈥?200 MPa (typical) |
| Water absorption (24 h) | ASTM D570 | < 0.5% |
| Barcol hardness | ASTM D2583 | > 40 |
| Thermal conductivity | ASTM C177 / ISO 8302 | 0.3 鈥?0.5 W/(m路K) |
| Coeff. of thermal expansion (in-plane) | ASTM D696 | 鈮?12 脳 10鈦烩伓 /掳C |
| Dielectric strength | ASTM D149 | > 10 kV/mm (inherent insulation) |
Match the resin to the media, concentration and service temperature
Tg is the glass-transition temperature; max continuous service temperature is the long-term design limit.
| Resin System | Tg (typical) | Max Service Temp. | Chemical Resistance Summary | Fire Performance | Typical Application |
|---|---|---|---|---|---|
| ZeAll Ortho (general purpose) | 鈮?80 鈥?100 掳C Tg | 鈮?60 掳C | Good general/corrosion; water, mild acids/bases | Self-extinguishing (ASTM D635); E84 鈮?25 typical | General walkways, sewage, water treatment |
| ZeAll ISO (corrosion grade) | 鈮?110 鈥?120 掳C Tg | 鈮?80 掳C | Improved acid/alkali resistance over ortho | Self-extinguishing; E84 鈮?25 | Chemical plants, plating, scrubbers |
| ZeAll VE (vinyl ester) | 鈮?130 鈥?150 掳C Tg | 鈮?90 掳C | Excellent 鈥?acids, solvents, oxidizers, bleach | Self-extinguishing; E84 鈮?25 | Harsh process areas, pulp & paper, offshore |
| ZeAll FR (fire-retardant VE) | 鈮?130 鈥?150 掳C Tg | 鈮?90 掳C | Excellent corrosion + low flame spread / low smoke | E84 Class A (鈮?25, low smoke); USCG / ABS options | Marine, metro, enclosed/ventilated buildings |
| Phenolic | 鈮?180 掳C+ Tg | 鈮?120 掳C (long-term) | Excellent fire/smoke performance; limited chemical range | Very low smoke, self-extinguishing, no dripping | Public transport, tunnels, high-fire-risk zones |
Coefficient of friction (COF) 鈥?wet and dry
COF values are indicative; grit-top provides the highest grip in wet/oily service and is commonly specified where anti-slip ratings such as R13 matter.
| Surface | COF (dry / wet) | Open-Area Effect | Typical Use |
|---|---|---|---|
| Concave (meniscus, standard) | 0.60 鈥?0.70 dry / 0.45 鈥?0.55 wet | No loss of open area | Standard molded profile 鈥?general industrial walkways |
| Convex | 0.55 鈥?0.65 dry / 0.40 鈥?0.50 wet | No loss of open area | Improved drainage, easy cleaning |
| Grit-top (silica carbide / quartz) | 0.75 鈥?0.85 dry / 0.55 鈥?0.70 wet | Slightly reduced open area | Wet, oily and chemical process areas 鈥?best grip |
| Smooth | 0.30 鈥?0.40 dry / 0.15 鈥?0.25 wet | No loss of open area | Light pedestrian / aesthetic; not for wet service |
Standard stock colors, dimensional tolerances and clip selection
Standard colors: Green (RAL 6010) 路 Gray (RAL 7047) 路 Yellow (RAL 1003) 路 Red 路 Blue 路 Black. Custom Pantone / RAL matching available on request.
| Feature | Tolerance | Note |
|---|---|---|
| Panel thickness | 卤 1.0 mm | Measured at the bar centre |
| Panel dimensions (1220 / 3660 mm) | 卤 3.0 mm | Length and width |
| Squareness (diagonal) | 鈮?3.0 mm | Difference of two diagonals |
| Flatness (warpage) | 鈮?3 mm per 1000 mm | Over support span |
| Grating | Recommended Clip | Material Options | Clips per Panel | Spacing |
|---|---|---|---|---|
| 38 mm molded | G-Clip or M-Clip | SS304 / SS316 / galvanized | 鈮?6 鈥?8 per panel | 鈮?1200 mm c/c at each support |
G-Clip for standard molded thicknesses; M-Clip for 50 mm heavy panels. In coastal/marine or chemical service, specify SS316 over galvanized to avoid galvanic corrosion.
38mm Molded Grating 鈥?common questions
The most stocked panel is 1220 脳 3660 mm (鈮?4' 脳 12'). Other standard panels are 1000 脳 3000 mm and 1220 脳 2440 mm, with cut-to-size available on request.
A 38 脳 38 mm mesh panel weighs about 18.6 kg/m虏, or roughly 83.0 kg for a standard 1220 脳 3660 mm panel. The 38 mm 脳 19 mm mini-mesh version weighs about 22.0 kg/m虏 (鈮?98.2 kg per panel).
The 38 脳 38 mm square mesh has an open area of 70%. The 19 脳 19 mm mini-mesh configuration has about 44% open area and is used where smaller openings are required.
Indicative maximum span at L/200 deflection is about 1250 mm for 38 脳 38 mm mesh, with a maximum uniform load of about 23.5 kN/m虏 over a 1 m span. Verify against certified load/span charts for your exact resin and surface.
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 鈥?since 2004.
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 →
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