Marine and offshore environments present some of the most extreme conditions for industrial materials. Constant exposure to saltwater, UV rays, oil, heavy loads, and harsh chemicals can quickly degrade traditional construction materials like wood, steel, or aluminum. To meet these challenges, griglia in fibra di vetro (FRP grating) has become the go-to solution for ship decks, dock surfaces, and offshore oil rigs due to its exceptional durability, safety, and performance in corrosive and wet conditions.

Exceptional Corrosion Resistance

The primary advantage of fiberglass grating in marine environments is its resistance to corrosion. Saltwater is notorious for corroding metal surfaces, leading to rust, structural degradation, and high maintenance costs. Fiberglass grating, composed of glass fiber reinforced with resin (typically vinyl ester or isophthalic), is inherently resistant to salt, seawater spray, and marine atmospheres. This makes it ideal for dock walkways, vessel decks, pontoons, and rig platforms, where long-term exposure to moisture and salt is unavoidable.

Lightweight Yet High Strength

Despite being significantly lighter than steel (roughly one-fourth the weight), fiberglass grating offers excellent load-bearing capacity. This strength-to-weight ratio is critical for offshore platforms and ships where reducing overall weight improves fuel efficiency and stability. It also simplifies installation and retrofitting — especially in hard-to-access offshore or port areas — as it can be carried and installed without heavy machinery.

Anti-Slip Safety in Wet Environments

Safety is a critical concern on ships and oil rigs where surfaces are often wet or slick with oil or fuel. Fiberglass grating features anti-slip surfaces, such as gritted or serrated finishes, which provide superior traction. These surfaces reduce the risk of slips and falls even in high-traffic areas exposed to seawater and oil spills. In emergency conditions, maintaining grip on walking surfaces can be life-saving, making FRP grating a vital safety investment.

Non-Conductive and Fire Retardant

Fiberglass grating is non-conductive, making it safe for electrical environments commonly found on oil rigs and ships. It does not spark, rust, or conduct electricity, reducing hazards in sensitive installations like electrical rooms, battery compartments, and control centers. Furthermore, marine-grade FRP grating can be manufactured using fire-retardant resins, which comply with stringent fire and smoke regulations (e.g., ASTM E84).

Low Maintenance and Long Service Life

In offshore and coastal applications, access for repairs and maintenance is expensive and time-consuming. Fiberglass grating significantly reduces downtime and labor costs as it is UV-stable, non-corrosive, and does not require painting or coating. It retains its appearance and structural integrity for decades even under constant exposure to marine conditions.

Versatile Marine Applications

Fiberglass grating is used across a wide range of marine structures:

--Ship decks and platforms

--Floating docks and pontoons

--Pier walkways and boat landings

--Offshore oil and gas platforms

--Wave-breakers, access ladders, and catwalks

FRP Grating Specifications & Technical Parameters

1.General Specifications

Articolo	Descrizione
Product Type	Molded FRP Grating / Pultruded FRP Grating
Mesh Size	38x38 mm (1.5"x1.5") / 40x40 mm / Custom
Thickness (Height)	25 mm / 30 mm / 38 mm / 50 mm
Dimensioni del pannello	1220x3660 mm / 1000x4000 mm / Custom
Open Area	60% – 70% (depending on mesh size)
Opzioni di superficie	Gritted / Concave / Smooth / Covered Top
Colore	Gray, Yellow, Green, Red, Custom

2. Mechanical Properties (Typical Values)

Proprietà	Valore	Test Standard
Resistenza alla trazione	≥ 120 MPa (17,400 psi)	ASTM D638
Resistenza alla flessione	≥ 200 MPa (29,000 psi)	ASTM D790
Modulo di flessione	≥ 7,800 MPa (1.13×10⁶ psi)	ASTM D790
Resistenza alla compressione	≥ 200 MPa (29,000 psi)	ASTM D695
Impact Strength (Izod)	≥ 85 J/m	ASTM D256
Durezza Barcol	≥ 40	ASTM D2583

3. Physical & Chemical Properties

Proprietà	Valore	Test Standard
Densità	~1.8–2.0 g/cm³	ASTM D792
Water Absorption	< 0.5%	ASTM D570
Flame Retardancy	≤ 25 (Class 1)	ASTM E84
Resistenza ai raggi UV	Available with UV inhibitor	-
Conduttività elettrica	Non conduttore	-
Thermal Conductivity	~0.25 W/m·K	ASTM C177
Operating Temperature Range	-50°C to +120°C (varies by resin)	-

4. Resin Systems Available

Resin Type	Caratteristiche	Application Areas
Orthophthalic	General purpose, cost-effective	General industry, flooring
Isophthalic	Improved chemical resistance	Wastewater, food processing
Vinilestere	Excellent chemical and corrosion resistance	Chemical plants, offshore, mining
Fenolico	Fire and smoke resistance	Oil & gas, transport, marine

5. Load Table (Example for 38mm Thick Grating)

Apertura (mm)	Load (kN/m²)	Deflessione (mm)
600	5.0	4.5
800	3.5	5.9
1000	2.0	7.6

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