FRP Gratings

FRP Gratings with Light Weight but High Strength

SARE Company'sFRP/GRP gratings(Fiberglass Reinforced Plastic Gratings) are interwoven from glass fibers, cast resin and then molded into FRP grating plates with regularly distributed rectangle or square holes, and they have perfect bi-directional mechanical properties. FRP gratings can be widely used for the workingplatforms, equipment platforms, drilling platforms andwalkwaysof petroleum, chemical electronics, electricity, paper, printing and dyeing, electroplating, ocean exploration, sewage treatment and so on. They are the ideal choice for corrosive environments, but also can be applied to civil construction facilities.

Three kinds of manufacturing techniques:

• Reciprocating filament winding process.
• Continuous filament winding process.
• Centrifugal pouring process.

And nowadays, manufacturers who use reciprocating filament winding process are much more than the other two production technologies manufacturers, one of the reasons is that the FRP gratings made by the reciprocating filament winding process have a wider range of applications and better applicability.

Resin system:

Resin type	Resin base	Description	Corrosion resistance	Colors	Usage temperature
Type-V-1	Vinyl ester	Superior corrosion resistant and retardant.	Excellent	Dark green, orange	-50℃ - 110℃
Type-V-2	Vinyl ester	Superior corrosion resistant and enhanced retardant.	Excellent
Type-V-3	Vinyl ester	Industrial grade corrosion resistant and fire retardant.	Very good
Type-I-1	Isophthalic polyester	Industrial grade corrosion resistant and extra fire retardant.	Very good	Green, yellow, light grey	-50℃ - 90℃
Type-I-2	Isophthalic polyester	Food grade corrosion resistant and fire retardant.	Very good
Type-O-1	Orthophthalic polyester	Moderate corrosion resistant and fire retardant.	Moderate	Green, light grey	-50℃ - 60℃
Type-O-2	Orthophthalic polyester	Moderate corrosion resistant.	Moderate

• Type-V-1
  This resin is highly corrosion resistant, no matter in acidic or caustic environments, and it is especially solvent resistant. Its flame spread rating is 25 or less according to ASTM E-84 tunnel test.
• Type-V-2 & Type-V-3
  This high corrosion resistant resin is the ideal choice for high flammability conditions, and its flame spread rating is 10 or less according to ASTM E-84 tunnel test.
• Type-I-1
  This resin is widely used for moderately corrosive environments like industrial and chemical operating applications. Its flame spread rating is 25 or less according to ASTM E-84 tunnel test.
• Type-I-2
  This resin system can be used in meat, food, bottling and brewing processing applications. The flame spread rating is 30 or less according to ASTM E-84 tunnel test.
• Type-O-1
  This resin system is designed to meet mildly corrosive conditions, and its flame spread rating is 25 or less according to ASTM E-84 tunnel test.
• Type-O-2
  This resin system is designed to meet mildly corrosive conditions, but it is not fire retardant.

Surface types:

Common surface types:

• Naturally concave surface.
• Polished smooth surface.
• Sanding surface.

Covered surface types:

• Gritted top covered surface.
• Pattern covered surface.

Classifications:

FRP gratings are mainly divided into two kinds - molded FRP gratings and pultruded FRP gratings.

• Molded FRP gratings

  Molded FRP Gratings Specifications

  Mesh shape	Thickness (mm)	Mesh size (mm)	Panel dimension (mm)	Open area (%)	Weight (kg/m2)
  Normal square mesh	13	38 × 38	1220 × 3660	87	5.5
  	13	50 × 50	1220 × 3660, 2000 × 2000	82	6.5
  	25	38 × 38	1000 × 3017, 1000 × 4083, 1220 × 3660	70	12.5
  	25	40 × 40	1000 × 2000, 1000 × 3000, 1000 × 4000, 1200 × 3000	65	13.5
  	30	38 × 38	1000 × 3017, 1000 × 4083, 1220 × 3660	65	14.5
  	30	40 × 40	1000 × 2000, 1000 × 3000, 1000 × 4000, 1200 × 3000	53	15.5
  	38	38 × 38	1000 × 3017, 1000 × 4083, 1220 × 3660	70	18.5
  	38	40 × 40	1000 × 2000, 1200 × 3000, 1000 × 4000, 1500 × 3000	70	19.5
  Mini square mesh	30	19 × 19	1000 × 2000, 1000 × 3000, 1000 × 4000, 1200 × 2000, 1200 × 4000, 1500 × 3000	44	16.5
  	40	19 × 19	1000 × 2000, 1000 × 4000, 1200 × 2000, 1200 × 4000	45	21.5
  	50	19 × 19	1220 × 3660	44	26.5
  Micro square mesh	30	15 × 15	1000 × 3000	45	19.5
  	30	13 × 13	1000 × 4083, 1220 × 3660	53	18.5
  	38	13 × 13	1000 × 4083, 1220 × 3660	53	22.5
  Heavy duty square mesh	50	50 × 50	1220 × 3660, 1220 × 4010	48	21.5
  	55	50 × 25	1500 × 3000	50	30.5
  	60	38 × 38	1220 × 3660	63	45.5
  Rectangular mesh	25	100 × 25	1000 × 2000, 1000 × 3000, 1000 × 4000	69	13.5
  	28	100 × 50	1500 × 2000, 1500 × 4100	58	9.5

• Pultruded FRP gratings
  Pultruded FRP grating mainly have three types: I-shape bars, T-shape bars and high-load bars.

Pultruded FRP Gratings Specifications

Item No.	Thickness (mm)	Top edge width (mm)	Space between (mm)	Clearance width (mm)	Open area (%)	Weight (kg/m2)
SAREI-01	25	15	25	10	40	17
SAREI-02	25	15	30	15	50	14
SAREI-03	25	15	38	23	60	11
SAREI-04	25	8	20	11	60	12
SAREI-05	38	15	25	10	40	22
SAREI-06	38	15	30	15	50	19
SAREI-07	38	15	38	23	60	16
SAREI-08	30	15	25	10	40	18.5
SAREI-09	30	15	30	15	50	15.5
SAREI-10	30	15	38	23	60	12.5
SAREI-11	32	15	25	10	40	20
SAREI-12	32	15	30	15	50	17.5
SAREI-13	32	15	38	23	60	13.5
SAREI-14	50	15	25	10	40	28.5
SAREI-15	50	15	30	15	50	24
SAREI-16	50	15	38	23	60	20
SARET-01	25	38	43	5	12	14.5
SARET-02	25	38	50	9	18	14
SARET-03	25	38	50	12	25	12.5
SARET-04	25	40	20	61	33	11
SARET-05	25	38	60	23	38	10
SARET-06	38	38	43	5	12	19.5
SARET-07	38	38	50	13	25	16.5
SARET-08	38	38	60	23	38	14
SARET-09	50	25	30	13	33	20.5
SARET-10	50	25	58	25	50	15.5
SAREHL-01	50	15	10	10	40	70.5
SAREHL-02	50	15	15	15	50	52
SAREHL-03	50	15	23	23	60	43.5

Features:

• Corrosion resistant
  Resisting to acid, alkali, organic solvents, salts and many other gases and liquid media, FRP gratings have incomparable superiority in the field of preservation. According to the practical application requirements, orthophthalic, isophthalic and vinyl resins can be chosen as matrix material FRP gratings are widely used in all the aspects of chemical preservation, and they are replacing carbon steel, stainless steel, wood and non-ferrous metals.
• Lightweight & high strength
  Because FRP grating is a composite of resins and fiber glasses, its density is less than 2 kg/dm3, which is 1/4 of the steel density and 2/3 of aluminum density. FRP grating's strength is ten times of RPVC, and its absolute strength level is higher than aluminum and ordinary steel. Its lightweight can greatly reduce the basic support, so as to reduce the material costs of the project. FRP gratings are easy to cut and install, no flame and large lifting equipment is needed, only need a small number of manual and electric tools, so as to reduce the installation costs.
• Ergonomic
  Workers would get tired after a long time working on solid concrete or steel platforms, but FRP gratings can ease the strain their backs, feet and legs, so as to increase their comfort and work efficiency.
• Good thermal performance
  FRP grating has low thermal conductivity - 1.25 - 1.67kj/(m.h.k) at room temperature, which is only 1/100 - 1/1000 of metals, therefore it is an excellent insulating material. In the case of instantaneous ultra-high temperature, FRP gratings are ideal for thermal protection and ablation resistance.
• Inflaming retarding
  The flame propagation rate of ordinary flame retardant grating does not exceed 25, and the flame propagation rate of superb flame retardant vinyl grating does not exceed 10. The oxygen index is not less than 28.
• Security with good electrical properties
  FRP grating has excellent electrical insulation properties as an insulator, and it can still protect good dielectric properties under high-frequency. Due to the good microwave permeability, FRP gratings have been widely used in radar and radome. Due to the no breakdown under 10KV voltage and no electromagnetic, FRP gratings can be used on equipment sensitive to magnetism. And the special structure of FRP grating has the features of anti-slip and anti-fatigue.
• Uniform color
  The color can be arbitrarily chosen, according to the request of customers, improving the workplace environment.
• Outstanding designability
  A variety of structured FRP gratings can be designed to meet the customers' requirements, letting the products have good integrity. And the materials can fully satisfy the product performance, such as corrosion resistant, instantaneous high temperature resistant, high tensile strength and good dielectric property.
• Good manufacturability
  One-step molding process, prominent economic effect.
• Have good overall economic efficiency
• Anti-aging
  More than twenty years of service lives.

Applications:

• Water treatment:maintenance walkway, sewer covers, large containers, clean device, trash rack, launder, biochemical water pool rack, hopper window, stair, cooling tower station pavement.
• Chemical industries:stair tread plate, platform,fence, double floor,trench cover, filter shed.
• Oil industries:offshore oil platforms.
• Textile industries:replacement of steel grating and wood platform, covering the concrete platform, the ground around bleaching vat and valve.
• Power station:the cover of chemical waste water trench and pool.
• Metal surface treatment:pickling place, replacing the wood floor around the machine and highly corrosive container, plating line walkway, double floor.
• Marine food processing industries:for the creamy surface on the ship.
• Transportation:platform, ship decks, walkway, military minesweepers, stair tread plate.
• Beverage industries:stair tread plate, replace expensive stainless steel, load floor.
• Pulp and paper:stair tread plate, floor, walkway and humid place.
• Electronics industries:trench cover, pickling workshop, anti-static and high cleanliness workshop.
• Meat-processing industries:readily corrodible floor, slippery floor and stair tread.
• Carwash room / Automobile beauty shop:the drainage board, parking place, trench cover of wash room.
• Others:corrosion resistant shelves, decoration, square fountain, scaffolding, civil construction facilities, aquaculture fence and double floor.

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