This 49-term glossary translates the full FRP grating vocabulary — from resin chemistry to bearing-bar and grit top — so buyer and supplier quote the same spec every time.
- Best for: engineers and buyers standardizing FRP specifications
- Use when: clarifying size, surface and load terminology in RFQs
- Key spec: ASTM-based terms, covers molded + pultruded + accessories
Introduction
This comprehensive glossary covers 49 essential FRP (Fiber Reinforced Polymer) grating and composite material terms every engineer, procurement manager, and project specifier should know. Each term includes translations in Spanish, German, and French for international reference.
A
ASTM E-84
Standard test method for surface burning characteristics of building materials. Measures Flame Spread Index (FSI) and Smoke Developed Index (SDI).
Translations:
- 🇪🇸 Español: ASTM E-84
- 🇩🇪 Deutsch: ASTM E-84
- 🇫🇷 Français: ASTM E-84
B
Bearing Bar
The main load-carrying bar in pultruded grating, oriented perpendicular to supports. Available in I-bar, T-bar, and rectangular shapes.
Translations:
- 🇪🇸 Español: Barra Portante
- 🇩🇪 Deutsch: Tragstab
- 🇫🇷 Français: Barre Porteuse
BOQ (Bill of Quantities)
Document listing all materials, quantities, and specifications for a project. Customers can upload BOQ for fast quotation.
Translations:
- 🇪🇸 Español: BOQ (Lista de Cantidades)
- 🇩🇪 Deutsch: BOQ (Stückliste)
- 🇫🇷 Français: BOQ (Bordereau des Quantités)
C
Concave Surface
Standard surface with curved bar tops (meniscus). Moderate slip resistance R9-R10. Easy to clean. Most common surface type.
Translations:
- 🇪🇸 Español: Superficie Cóncava
- 🇩🇪 Deutsch: Konkave Oberfläche
- 🇫🇷 Français: Surface Concave
C-Clip
Edge mounting grating fastener shaped like letter C. Used at panel edges and perimeter locations.
Translations:
- 🇪🇸 Español: Clip en C
- 🇩🇪 Deutsch: C-Clip
- 🇫🇷 Français: Clip en C
Chemical Resistance
Ability of FRP to withstand exposure to acids, alkalis, solvents, and other chemicals without degradation. Depends primarily on resin type.
Translations:
- 🇪🇸 Español: Resistencia Química
- 🇩🇪 Deutsch: Chemische Beständigkeit
- 🇫🇷 Français: Résistance Chimique
CAD (Computer-Aided Design)
Software for creating precise technical drawings. ZEALL provides CAD drawings (DWG, DXF) for custom fabrication projects.
Translations:
- 🇪🇸 Español: CAD (Diseño Asistido por Computadora)
- 🇩🇪 Deutsch: CAD (Rechnergestütztes Konstruieren)
- 🇫🇷 Français: CAO (Conception Assistée par Ordinateur)
CE Marking
Conformity marking required for products sold in the European Economic Area. Indicates compliance with EU health, safety, and environmental standards.
Translations:
- 🇪🇸 Español: Marcado CE
- 🇩🇪 Deutsch: CE-Kennzeichnung
- 🇫🇷 Français: Marquage CE
D
Deflection Limit
Maximum allowable bending of grating under load. Typically L/200 for pedestrian areas, L/300 for precision equipment. L = span length.
Translations:
- 🇪🇸 Español: Límite de Deflexión
- 🇩🇪 Deutsch: Durchbiegungsgrenze
- 🇫🇷 Français: Limite de Flèche
E
EPC (Engineering, Procurement, Construction)
Type of contracting where one contractor handles all engineering, procurement, and construction. ZEALL supplies FRP to EPC companies worldwide.
Translations:
- 🇪🇸 Español: EPC (Ingeniería, Adquisiciones, Construcción)
- 🇩🇪 Deutsch: EPC (Engineering, Procurement, Construction)
- 🇫🇷 Français: EPC (Ingénierie, Approvisionnement, Construction)
F
FRP (Fiber Reinforced Polymer)
A composite material made of polymer matrix reinforced with glass fibers. Also known as GRP (Glass Reinforced Plastic).
Translations:
- 🇪🇸 Español: PRFV (Polímero Reforzado con Fibra)
- 🇩🇪 Deutsch: FVK (Faserverstärkter Kunststoff)
- 🇫🇷 Français: PRFV (Polymère Renforcé de Fibres)
Flame Spread Index (FSI)
Scale 0-200 measuring how fast flame spreads across a material surface. 0 = non-combustible, 200 = red oak reference. Class A = 0-25.
Translations:
- 🇪🇸 Español: Índice de Propagación de Llama
- 🇩🇪 Deutsch: Flammenausbreitungsindex
- 🇫🇷 Français: Indice de Propagation des Flammes
G
GRP (Glass Reinforced Plastic)
Same as FRP. Common term in UK and Europe for fiberglass composite materials.
Translations:
- 🇪🇸 Español: PRFV (Plástico Reforzado con Vidrio)
- 🇩🇪 Deutsch: GFK (Glasfaserverstärkter Kunststoff)
- 🇫🇷 Français: PRV (Plastique Renforcé de Verre)
Grit Surface
Anti-slip surface with quartz sand embedded in resin. Highest slip resistance rating R13. Ideal for wet and oily environments.
Translations:
- 🇪🇸 Español: Superficie con Arena
- 🇩🇪 Deutsch: Grit-Oberfläche
- 🇫🇷 Français: Surface Grit
Glass Content
Percentage of glass fiber in FRP by weight. Typical 60-70% for pultruded, 45-55% for molded. Higher content = higher strength.
Translations:
- 🇪🇸 Español: Contenido de Vidrio
- 🇩🇪 Deutsch: Glasanteil
- 🇫🇷 Français: Teneur en Verre
Galvanic Corrosion
Electrochemical corrosion between dissimilar metals. FRP is non-conductive, eliminating galvanic corrosion entirely.
Translations:
- 🇪🇸 Español: Corrosión Galvánica
- 🇩🇪 Deutsch: Galvanische Korrosion
- 🇫🇷 Français: Corrosion Galvanique
H
H2S Corrosion
Corrosion caused by hydrogen sulfide gas, common in wastewater treatment and oil & gas. FRP is immune to H2S, unlike steel which corrodes rapidly.
Translations:
- 🇪🇸 Español: Corrosión por H2S
- 🇩🇪 Deutsch: H2S-Korrosion
- 🇫🇷 Français: Corrosion par H2S
Handrail System
Safety barrier system made of FRP pultruded profiles. Includes posts, rails, and fittings. Corrosion-resistant alternative to steel handrails.
Translations:
- 🇪🇸 Español: Sistema de Barandilla
- 🇩🇪 Deutsch: Geländersystem
- 🇫🇷 Français: Système de Garde-Corps
I
Isophthalic Polyester
Mid-grade polyester resin with good chemical resistance for wastewater and general industrial applications. Temperature up to 80°C.
Translations:
- 🇪🇸 Español: Poliéster Is oftálico
- 🇩🇪 Deutsch: Isophthalisches Polyester
- 🇫🇷 Français: Polyester Isophtalique
ISO 9001
International standard for quality management systems. ZEALL is ISO 9001:2015 certified, ensuring consistent product quality.
Translations:
- 🇪🇸 Español: ISO 9001
- 🇩🇪 Deutsch: ISO 9001
- 🇫🇷 Français: ISO 9001
L
Load Class
Classification of grating load capacity: Light (pedestrian), Medium (walkway), Heavy (industrial platform), Extra Heavy (vehicle traffic).
Translations:
- 🇪🇸 Español: Clase de Carga
- 🇩🇪 Deutsch: Belastungsklasse
- 🇫🇷 Français: Classe de Charge
Lead Time
Time from order confirmation to shipment. ZEALL standard lead time is 15-25 days, faster than leading brands (30-45 days).
Translations:
- 🇪🇸 Español: Tiempo de Entrega
- 🇩🇪 Deutsch: Lieferzeit
- 🇫🇷 Français: Délai de Livraison
Lifespan / Service Life
Expected service life of FRP grating. With proper resin selection, 20+ years in corrosive environments. ZEALL offers 20+ year warranty.
Translations:
- 🇪🇸 Español: Vida Útil
- 🇩🇪 Deutsch: Lebensdauer
- 🇫🇷 Français: Durée de Vie
M
Molded Grating
FRP grating manufactured by pressing continuous glass fibers in a cross pattern with resin in heated molds. Has bidirectional strength.
Translations:
- 🇪🇸 Español: Rejilla Moldeada
- 🇩🇪 Deutsch: Geformtes Gitter
- 🇫🇷 Français: Grille Moulée
Mesh Size
The opening size between grating bars. Standard 38x38mm, mini-mesh 19x19mm, micro-mesh 12x12mm. Prevents small tools from falling through.
Translations:
- 🇪🇸 Español: Tamaño de Malla
- 🇩🇪 Deutsch: Maschenweite
- 🇫🇷 Français: Taille de Maille
M-Clip
Standard grating fastener shaped like letter M. Used to secure grating panels to support structure. Most common clip type.
Translations:
- 🇪🇸 Español: Clip en M
- 🇩🇪 Deutsch: M-Clip
- 🇫🇷 Français: Clip en M
MOQ (Minimum Order Quantity)
The smallest order quantity a manufacturer accepts. ZEALL offers MOQ of 1 piece, meaning no minimum order requirement.
Translations:
- 🇪🇸 Español: MOQ (Cantidad Mínima de Pedido)
- 🇩🇪 Deutsch: MOQ (Mindestbestellmenge)
- 🇫🇷 Français: MOQ (Quantité Minimum de Commande)
Magnetic Transparency
FRP does not interfere with magnetic fields. Used in MRI rooms and areas with sensitive electronic equipment.
Translations:
- 🇪🇸 Español: Transparencia Magnética
- 🇩🇪 Deutsch: Magnetische Transparenz
- 🇫🇷 Français: Transparence Magnétique
N
Non-Conductive
Property of FRP that does not conduct electricity. Important safety feature for electrical substations and power plants.
Translations:
- 🇪🇸 Español: No Conductor
- 🇩🇪 Deutsch: Nichtleitend
- 🇫🇷 Français: Non Conducteur
O
Orthophthalic Polyester
General purpose polyester resin for dry indoor and mild exposure environments. Lowest cost option.
Translations:
- 🇪🇸 Español: Poliéster Ortoftálico
- 🇩🇪 Deutsch: Orthophthalisches Polyester
- 🇫🇷 Français: Polyester Orthophtalique
OEM (Original Equipment Manufacturer)
Manufacturing products under another company's brand name. ZEALL offers OEM/ODM services with custom branding and packaging.
Translations:
- 🇪🇸 Español: OEM (Fabricante de Equipo Original)
- 🇩🇪 Deutsch: OEM (Originalgerätehersteller)
- 🇫🇷 Français: OEM (Fabricant d'Équipement d'Origine)
ODM (Original Design Manufacturer)
Manufacturer that designs and produces products for another company to sell under their brand. ZEALL provides full ODM support.
Translations:
- 🇪🇸 Español: ODM (Fabricante de Diseño Original)
- 🇩🇪 Deutsch: ODM (Originaldesignhersteller)
- 🇫🇷 Français: ODM (Fabricant de Conception d'Origine)
P
Pultruded Grating
FRP grating made by pulling continuous fibers through a resin bath and heated die, forming I-bar or T-bar bearing bars. Higher unidirectional strength.
Translations:
- 🇪🇸 Español: Rejilla Pultruida
- 🇩🇪 Deutsch: Pultrudiertes Gitter
- 🇫🇷 Français: Grille Pultrude
Phenolic Resin
Fire-retardant resin with Class A flame spread (FSI <25), low smoke, and zero halogen. Used in tunnels, offshore, and transit.
Translations:
- 🇪🇸 Español: Resina Fenólica
- 🇩🇪 Deutsch: Phenolharz
- 🇫🇷 Français: Résine Phénolique
Platform
Elevated work surface for equipment access and maintenance. FRP grating provides corrosion-resistant, lightweight platform flooring.
Translations:
- 🇪🇸 Español: Plataforma
- 🇩🇪 Deutsch: Plattform
- 🇫🇷 Français: Plateforme
Pultruded Profile
Continuous FRP shapes made by pultrusion process. Includes I-beams, channels, angles, tubes, and rods. Used for structural support.
Translations:
- 🇪🇸 Español: Perfil Pultruido
- 🇩🇪 Deutsch: Pultrudiertes Profil
- 🇫🇷 Français: Profil Pultrude
R
Resin Content
Percentage of resin matrix in FRP by weight. Typical 30-40% for pultruded, 45-55% for molded. Resin provides corrosion resistance.
Translations:
- 🇪🇸 Español: Contenido de Resina
- 🇩🇪 Deutsch: Harzanteil
- 🇫🇷 Français: Teneur en Résine
S
Solid Cover
Completely sealed top surface that prevents liquids, debris, and small objects from falling through. Used for tank covers and trench covers.
Translations:
- 🇪🇸 Español: Cubierta Sólida
- 🇩🇪 Deutsch: Vollständige Abdeckung
- 🇫🇷 Français: Couverture Pleine
SS316 Stainless Steel
Marine-grade stainless steel with molybdenum addition for superior chloride corrosion resistance. Used for grating clips in coastal and offshore environments.
Translations:
- 🇪🇸 Español: Acero Inoxidable SS316
- 🇩🇪 Deutsch: Edelstahl SS316
- 🇫🇷 Français: Acier Inoxydable SS316
Slip Resistance (R-Value)
DIN 51130 rating for floor slip resistance: R8 (low) to R13 (maximum). Grit surface typically R13, concave surface R9-R10.
Translations:
- 🇪🇸 Español: Resistencia al Deslizamiento (Valor R)
- 🇩🇪 Deutsch: Rutschfestigkeit (R-Wert)
- 🇫🇷 Français: Résistance au Glissement (Valeur R)
SGS Testing
Third-party testing and inspection by SGS, the world's leading inspection, verification, testing and certification company.
Translations:
- 🇪🇸 Español: Pruebas SGS
- 🇩🇪 Deutsch: SGS-Prüfung
- 🇫🇷 Français: Tests SGS
Stair Tread
Horizontal walking surface of a stair. FRP stair treads are corrosion-resistant, non-slip, and lightweight.
Translations:
- 🇪🇸 Español: Peldaño de Escalera
- 🇩🇪 Deutsch: Treppenstufe
- 🇫🇷 Français: Marche d'Escalier
T
Thermal Conductivity
FRP has low thermal conductivity (0.3-0.5 W/m·K), providing natural insulation. Much lower than steel (50 W/m·K).
Translations:
- 🇪🇸 Español: Conductividad Térmica
- 🇩🇪 Deutsch: Wärmeleitfähigkeit
- 🇫🇷 Français: Conductivité Thermique
Trench Cover
Covering for drainage trenches and cable channels. FRP solid cover grating prevents debris and liquids from entering trenches.
Translations:
- 🇪🇸 Español: Cubierta de Zanja
- 🇩🇪 Deutsch: Grabenabdeckung
- 🇫🇷 Français: Couverture de Tranchée
U
UV Stabilizer
Additive in resin that prevents degradation from ultraviolet sunlight. Essential for outdoor and exposed applications.
Translations:
- 🇪🇸 Español: Estabilizador UV
- 🇩🇪 Deutsch: UV-Stabilisator
- 🇫🇷 Français: Stabilisateur UV
V
Vinyl Ester Resin
Premium corrosion-resistant resin with excellent chemical resistance to acids, alkalis, and solvents. Temperature range up to 120°C.
Translations:
- 🇪🇸 Español: Resina de Vinil Éster
- 🇩🇪 Deutsch: Vinylesterharz
- 🇫🇷 Français: Résine Vinylester
W
Weight-to-Strength Ratio
FRP has excellent strength-to-weight ratio. 75% lighter than steel with comparable strength. Reduces structural load and installation cost.
Translations:
- 🇪🇸 Español: Relación Peso-Resistencia
- 🇩🇪 Deutsch: Gewicht-Festigkeits-Verhältnis
- 🇫🇷 Français: Rapport Poids-Résistance
Walkway
A path for pedestrian walking, typically elevated. FRP grating is ideal for walkways in corrosive industrial environments.
Translations:
- 🇪🇸 Español: Pasarela
- 🇩🇪 Deutsch: Gehweg
- 🇫🇷 Français: Passerelle
Z
Z-Clip
Heavy-duty grating fastener shaped like letter Z. Used for high traffic, vibration, and heavy load areas.
Translations:
- 🇪🇸 Español: Clip en Z
- 🇩🇪 Deutsch: Z-Clip
- 🇫🇷 Français: Clip en Z
Need More Information?
Looking for specific FRP grating products or technical data? Explore our product catalogue or contact our engineering team for material recommendations and structural calculations.
Frequently Asked Questions
FRP (Fiberglass Reinforced Plastic) grating is a molded or pultruded fiberglass composite grid used for corrosion-resistant walkways, platforms and floorings. It combines glass fiber reinforcement with thermoset resin (polyester, vinyl ester, epoxy) for superior strength-to-weight ratio, zero rust and 20+ year service life.



















