FRP/GRP Pultruded Fiberglass Square tube

FRP Square Tubes is very suitable for handrails and support structures in the industrial environments, such as outdoor sidewalks on the drilling platform, water treatment plants, animal husbandry facilities, and any places that require safe and durable walking surfaces. Meanwhile, bespoke colors and different surfaces are provided. It can also be used as a park handrails and corridor safety handrails. The surface of the Fiberglass Tube can guarantee durability even if there is moisture or severe chemicals.

Sinogrates@enough sizes of FRP Square tube to satisfy your requirements of structural matching

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FRP/GRP Pultruded Fiberglass Square Tube

Round Tube Moulds Types:

Serial Items	AXBXT(mm)	Weight g/m	Serial Items	AXBXT(mm)	Weight g/m
1	25X25X3.0	32	14	60X60X7.5	540
2	30X30X3.0	49	15	63X63X3.5	580
3	38X38X3.0	34	18	63X63X4.0	500
4	38X38X3.5	61	19	76X76X5.0	1917
5	38X38X4.0	77	20	76X76X6.35	1535
6	38X38X7.0	92	21	100X100X3.5	1259
7	40X40X5.0	87	22	100X100X4.5	1090
8	50X50X4.0	99	23	100X100X6.0	1085
9	50X50X5.0	114	24	100X100X8.0	815
10	50X50X6.0	97	25	102X102X4.0	600
11	50X50X6.3	130	26	102X102X5.5	420
12	60X60X5.0	110	27	110X110X8.0	610
13	60X60X6.0	95

Sinogrates@GFRP PULTRUSION:

•High-strength

•Dimensional stability

•Lightweight

•Corrosion resistant

•Non-conductive (thermally & electrically)

•Non-magnetic electromagnetic transparency

•Low maintenance

•UV protection

•Dual strength

•Lower long-term cost

FRP is increasingly becoming a popular material for structural applications due to its many advantages over traditional materials such as timber, aluminum and steel. Pultruded fiberglass reinforced structural profiles are not susceptible to rot, decay or insect attack. Furthermore, they require no environmentally unfriendly preservatives or repellants and do not absorb any significant amount of water. This makes them consistent in strength and appearance piece-to-piece. Pultruded fiberglass is also stronger, more rigid and lighter weight than structural timber.

In comparison to aluminum extrusions, fiberglass is electrically and thermally non-conductive, impact resistant, highly corrosion resistant and EMI/RFI transparent. When compared to steel, fiberglass is highly corrosion resistant and does not rust when exposed to weathering and chemicals.

Overall, fiberglass provides a number of significant advantages over traditional materials such as timber, aluminum and steel, making it an ideal choice for many structural applications.

FRP/GRP Pultruded Handrail Fiberglass round tubes

FRP Pultruded profiles Surfaces Opinions:

Depending on the sizes of FRP products and different environments, choosing different surface mats can achieve maximum performance to save costs to a certain extent.

Continuous Synthetic Surfacing Veils：

Continuous Synthetic Surfacing Veils is a commonly used pultruded profiles surface. The continuous composite surface felt is a silk fabric synthesized by continuous felt and surface felt. It can ensure the strength while making the surface more gloss and delicate. When touching the product, the person's hands will not be stabbed by glass fiber. The price of this profile is relatively high. Generally, it is used in places where people are touched by handrane fences, ladder climbing, toolproofs, and park landscapes. A considerable proportion of anti -ultraviolet reagents will be added during the production process. It can ensure that it does not fade for a long time and has good anti -aging performance.

Continuous strand mats:

Continuous strand mats is the surfaces commonly used in large pultruded profiles. Continuous strand mat has a high intensity and strength advantage. It is generally used in large structural pillars and beams. The surfaces of the Continuous strand mat is relatively rough. It is generally used in industrial supporting part to replace steel and aluminum at the venue of corrosion resistance. The use of practical large -scale profiles is used in the structures that people do not often touch. This kind of profile has good costs performance. It is suitable for large -scale applications in engineering. It can effectively reduce the cost of use and ensure the performance of the product.

Continuous compound strand mats:

Continuous compound strand mat is a fiberglass fabric waving composed of surfacing veils and continuous strand mats,which has excellent strength and nice appearance. It can effectively help to reduce the costs . It is the most economical choices if high-intensity and appearance requirements. It can also be applied to the handrail protection engineering. It can effectively exert the strength advantage and have people's hand touching protection.

Wood Grain Continuous Synthetic Surfacing Veils:

Wood Grain Continuous Synthetic Surfacing Veils is one kind of fiberglass fabric waving
It has excellent strength performance which is similar to wood products. It is a substitute for wood products such as landscapes, fences, villa fences, villa fences, etc. The product is similar to the appearance of wood products and is not easy to rot, not easy to fade, and low maintenance costs in the later period. There is a longer life life in the seaside or long -term sunlight.

Continuous Synthetic Surfacing Veils

FRP/GRP Fiberglass pultruded Rectangular Bar

Continuous strand mats

Continuous compound strand mats

Wood Grain Continuous Synthetic Surfacing Veils

FRP/GRP High strength Fiberglass pultruded I-Beams

Products capacities test laboratory:

The meticulous experimental equipment for FRP pultruded profiles and FRP molded gratings ,such as flexural tests,tensile tests,compression tests, and destructive tests. According to customers’ requirements,we will conduct performances & capacities tests on FRP products ,keeping the records to guarantee the quality stability for long-term.meanwhile, We are always researching & developing innovative products with testing the reliability of FRP product performance. We can ensure that the quality can satisfy customers’ requirements stably to avoid unnecessary after-sales problems.

FRP Pultruded Grating Fire Retardant/Chemical Resistant

FRP Resins Systems Choices:

Phenolic resin (Type P): The best choice for applications requiring max fire retardant and low smoke emissions such as oil refineries, steel factories, and pier decks.
Vinyl Ester (Type V): withstand the strict chemical environments used for chemical, waste treatment, and foundry plants.
Isophthalic resin (Type I): A nice choice for applications where chemical splashes and spills are a common occurrence.
Food Grade Isophthalic resin (Type F): Ideally suitable for food and beverage industry factories which are exposed to strict clean environments.
General Purpose Orthothphalic resin (Type O): economic alternatives to vinyl ester and isophthalic resins products.

Epoxy Resin(Type E):offer very high mechanical properties and fatigue resistance, taking the advantages of other resins. Mold costs are similar to PE and VE, but material costs are higher.

Polyester and vinyl ester resins are the most commonly used matrix resins to create composite parts.

Polyester resins, also known as Unsaturated Polyester Resins (UPR), combined with fiberglass reinforcements have been the building blocks of the composites industry for decades. These formulations provide low cost, ease of handling, quick cure, and high strength to create a wide variety of composite parts in countless applications. They are ideal for open molding as well as closed molding processes such as vacuum infusion processing, resin transfer molding, filament winding, compression molding and pultrusion. Polyester resin is also the primary resin matrix used in compression molding, bulk molding compounds (BMC) and sheet molding compounds (SMC), and in the pultrusion process.

There are a wide variety of polyester resin formulations available for specific applications. These include:

Ortohphthalic (Ortho) based general purpose resin
Isophthalic (Iso) based resin with higher heat distortion and improved corrosion resistance
Dicyclopentadiene (DCPD) based resin for low shrinkage and improved cosmetics
Specialty resins for fire performance, food service, or specific corrosion resistance

Vinyl ester resins (VE) are a polyester backbone molecule with an epoxy component. Vinyl ester formulations provide enhanced corrosion resistance and have a wide range of available strength, heat distortion, and shrinkage characteristics.

Resins options guide：

Resin Type	Resin Option	Properties	Chemmical Resistance	Fire Retardant(ASTM E84)	Products	Bespoke Colors	Max ℃ Temp
Type P	Phenolic	Low Smoke and Superior Fire Resistance	Very Good	Class 1, 5 or less	Molded and Pultruded	Bespoke Colors	150℃
Type V	Vinyl Ester	Superior Corrosion Resistance and Fire Retardant	Excellent	Class 1, 25 or less	Molded and Pultruded	Bespoke Colors	95℃
Type I	Isophthalic polyester	Industrial Grade Corrosion Resistance and Fire Retardant	Very Good	Class 1, 25 or less	Molded and Pultruded	Bespoke Colors	85℃
Type O	Ortho	Moderate Corrosion Resistance and Fire Retardant	Normal	Class 1, 25 or less	Molded and Pultruded	Bespoke Colors	85℃
Type F	Isophthalic polyester	Food Grade Corrosion Resistance and Fire Retardant	Very Good	Class 2, 75 or less	Molded	Brown	85℃
Type E	Epoxy	Excellent corrosion resistance and fire retardant	Excellent	Class 1, 25 or less	Pultruded	Bespoke Colors	180℃