Why Choose Our Fiberglass Flat Sheets?
- We have 11 years of experience in manufacturing and exporting fiberglass sheets (FRP panels), with over 7,000 successful projects.
- Standardised raw material quality inspection procedures and a strict raw material grading system ensure consistent fiberglass sheet quality.
- Our fiberglass flat sheets offer excellent impact resistance and a flexural strength of over 120 MPa.
- Our fiberglass flat sheets are free from bubbles, delamination, cracks, and other defects.
- We provide 24/7 rapid after-sales service and lifetime remote support.
- Comprehensive certification system: ASTM, UL94, FDA, TDS, MSDS, and Test Report.
Your Trusted Manufacturer of Fiberglass Flat Sheets
We are a factory with 198 employees and a production area of 75,000 square metres, specialising in the manufacture of fiberglass flat sheets. We operate 8 fully automated production lines and employ 16 traceable quality control processes to ensure the dimensional accuracy and consistency of our fiberglass sheets & FRP panels.
Our fiberglass flat sheets are characterised by weather resistance, corrosion resistance, water resistance, lightweight construction, and high strength, and are widely used across various sectors. We have extensive experience handling both bulk and bespoke orders.
Fiberglass Flat Sheets by Features
As a professional manufacturer of fiberglass flat sheets, we offer a wide variety of FRP panels & fiberglass sheets to suit your diverse requirements.
With superior impact resistance and strength far exceeding that of ordinary plastics, these panels are frequently used in the construction and industrial sectors.
Smooth, easy-to-clean, moisture-proof, and waterproof properties make them ideal for cold storage wall panels and food processing facilities.
With a wear-resistant, slip-resistant, and corrosion-resistant surface, it is widely used in the chemical industry and cold chain logistics.
Meeting customised customer requirements, their aesthetic appeal, smooth surface, and lightweight characteristics have led to their widespread use in the decoration industry.
YIKORFRP® offers excellent light transmission and resists yellowing, making it a popular choice for municipal projects and industrial lighting applications.
With increasing safety awareness, fire-resistant and corrosion-resistant products have emerged to further meet market demands.
Why Do You Need Our Fiberglass Flat Sheets?
In addition to our professional factory, our fiberglass flat sheets are also of excellent quality.
Fiberglass flat sheets feature a smooth surface and precise dimensional tolerances controlled to within 0.01mm.
Stable factory capacity and professional, organised order scheduling ensure a delivery time of 25 days.
Superior water resistance; water absorption rate controlled to less than 0.1%.
UV tested for 300 hours with no discolouration during storage; normal service life can exceed 20 years.
70% lighter than steel and approximately 35% lighter than aluminium.
Manufactured using high-grade vinyl ester raw materials, it can withstand acids and alkalis with a pH value ranging from 1 to 14.
Tensile strength exceeds 300 MPa, flexural strength exceeds 400 MPa, and compressive strength exceeds 250 MPa.
Professional and detailed installation drawings, along with a comprehensive remote online guidance service.
Long-Term Corrosion Resistance
In everyday use, fiberglass flat sheets offer superior corrosion resistance compared to metal panels. The metal sheets you use are prone to corrosion, thinning or perforation and rusting in chemical environments. In your chemical plant, FRP panels (fiberglass sheets) have a service life of approximately 10 to 25 years, reducing maintenance costs by up to 70%. In contrast, metal sheets typically last only 0.1 to 2 years, requiring frequent replacement and causing production downtime.
Fiberglass Flat Sheets with Waterproof
Our custom-made fiberglass flat panels feature a smooth, non-porous surface. With a water absorption rate of just 0.1%.In contrast, the metal sheets you currently use rely heavily on waterproof coatings and are prone to rust, whilst timber is susceptible to rot due to its high water absorption rate; Fiberglass flat panels offer significant advantages in both respects. By using fiberglass flat panels, you not only protect against damp and mould, but also ensure trouble-free performance even in cold conditions, thereby avoiding maintenance issues down the line.
Lightweight and High-Strength
During the manufacturing process, we use high-quality epoxy or unsaturated resins and precisely control the glass fiber content. We utilise continuous glass fiber mats and woven fabrics, employing a layered design and continuous production process. The fiberglass flat sheets you purchase are capable of withstanding forces from multiple directions and dispersing concentrated stresses, with a strength far exceeding that of PVC or ordinary plastics. Furthermore, we employ a roller-pressing process to ensure the resin fully impregnates the fibreglass, followed by curing in a high-pressure oven at 160°C to guarantee complete curing. This process achieves a strength that exceeds the requirements of certain metal applications whilst maintaining low density and lightweight properties.
Resource
This detailed overview of our full range of fiberglass sheets & FRP panels will help you gain a thorough understanding of our products.
Comprehensive certification system, including ASTM, UL94, FDA, TDS, MSDS, and test reports, etc. Please contact us if you have any questions.
We have carefully prepared videos of the production and quality inspection of fiberglass flat sheets for you to view.
Your Fiberglass Flat Sheet Solution?
From industrial buildings to food processing plants and transport systems, fiberglass sheets (FRP panels) are widely used and trusted due to their high strength, lightweight nature, waterproofing, corrosion resistance, and hygienic properties.
Fiberglass-reinforced plastic (FRP) panels are widely used in factory interiors for walls and floors, replacing traditional steel plates. In corrosive or high-humidity environments, FRP panels exhibit excellent weather resistance and can withstand rainwater erosion. Their lower long-term maintenance costs and ease of maintenance are highly valued. In some highly corrosive chemical plants, the service life is 3–5 times longer than that of steel.
Given the specific requirements of the food processing industry, particular attention must be paid to the antibacterial and hygiene standards for fiberglass-reinforced plastic (FRP) flat sheets. FRP flat sheets are widely used in refrigeration equipment and food processing plants. Their smooth, non-porous surface prevents bacteria from adhering, and their ease of cleaning makes them a popular choice in this sector.
As living standards improve, new demands arise for your living environment. In the process of modern urban construction, fiberglass flat sheets, with their convenient installation, flame-retardant properties, and aesthetic appeal, are used in ceilings, bathroom waterproofing walls, and building exteriors.
In the transport and vehicle manufacturing sectors, fiberglass flat sheets (FRP flat sheets) are gradually replacing traditional metal materials due to their exceptional lightness, high strength, corrosion resistance, and durability. They are becoming a primary material in lorries, refrigerated lorries, trailers, and motorhomes. For lorry body manufacturers: Reducing vehicle weight by 30–50% improves fuel efficiency and payload capacity. This meets market demand and generates greater profits.
On your farm or ranch, fiberglass flat sheets are constantly exposed to challenges such as high humidity, corrosive gases (such as ammonia), and frequent cleaning. Traditional metal or timber materials are often prone to corrosion, mould, or deterioration, whereas fiberglass flat sheets (FRP flat sheets), with their corrosion resistance, water resistance, weather resistance, and transparency, are becoming your ideal choice of building material.
More About Our YIKORFRP®
- Why Buyers Choose Us!
- Technical Data Sheet
Not Just Another FRP Supplier? Most buyers face the same issues when sourcing FRP panels and fiberglass sheets in China. Here are our solutions to these problems.
| Key Concerns | Typical FRP Suppliers | Our Factory |
| Batch Consistency | ❌ Colour variation, inconsistent strength between batches | ✅ No variation between batches (ERP-controlled formulation) Raw Material Quality |
| Raw Material Quality | ❌ Mixed or low-grade resin / unreliable suppliers | ✅ Certified resin system (Vinyl Ester / Polyester with COA) |
| Quality Control System | ❌ Random inspection | ✅ 16-step full inspection + traceability |
| Surface Quality | ❌ Bubbles, cracks, uneven gel coat | ✅ Smooth, defect-free surface (no delamination) |
| Thickness Tolerance | ❌ ±0.3mm or more | ✅ Precision control within ±0.1mm |
| Delivery Reliability | ❌ Delays during peak season | ✅ Stable delivery within 15–25 days (97% on-time rate) |
| Production Capacity | ❌ Limited capacity, unstable supply | ✅ 800,000 m²/month, 8 automated production lines |
| Customisation Capabilities | ❌ Limited options, slow response | ✅ Full customisation (size/thickness/colour/structure) Technical Support |
| Technical Support | ❌ Sales-only communication | ✅ Support from an 11-person engineering team |
| Application Solutions | ❌ Sell products only | ✅ Provide project-based solutions (truck bodies, cold storage, etc.) |
| After-Sales Support | ❌ Delayed or no response | ✅ 24/7 response + lifetime remote support |
| Certifications | ❌ Limited or unclear | ✅ ASTM / UL94 / FDA / MSDS / TDS complete |
This table sets out the technical specifications for our 1.8mm fiberglass flat sheets, based on various tensile, compression, and bending tests. This is one of the reasons we can guarantee the stability of your product. Recommended thickness: 1.5–3mm for truck bodies, 2–4mm for wall panels.
| Item | Typical Value | Unit | Test method |
| Thickness | 1.8 | mm | International Standards |
| Weight | 2900 | g/㎡ | International Standards |
| Glass content | 35-39 | % | International Standards |
| Barcol hardness | 40-50 | Barcol | GB/T 3854-2017 |
| Longitudinal tensile strength | 127 | MPa | GB/T 1447-2005 |
| Transverse tensile strength | 118 | MPa | GB/T 1447-2005 |
| Longitudinal compressive strength | 189 | MPa | GB/T 1448-2005 |
| Shear strength | 73.8 | MPa | GB/T 1450.2-2005 |
| Longitudinal bending strength | 218 | MPa | GB/T 1449-2005 |
| Longitudinal impact toughness | 91 | kj/㎡ | GB/T 1451-2005 |
| Linear expansion coefficient | 1.64*10 -6 | /℃ | GB/T 2572-2005 (35℃~100℃) |
fiberglass flat sheets (FRP panels) are a type of high-strength, lightweight composite material known for their corrosion resistance, durability, and smooth, easy-to-clean surface. fiberglass sheets are widely used in industrial plants, transport, food processing facilities and the cold chain. Traditional materials cannot adequately meet your needs, so fiberglass flat sheets are gradually gaining market share.
For standard orders, we can typically arrange delivery within 15 days. Customised orders generally take around 3–4 weeks to deliver. We operate 8 production lines, with a monthly production capacity of 800,000 square metres. Once your standard order is confirmed, we will draw up a production plan within 1–2 days, commence production within 3–10 days, and arrange delivery within 14–15 days. The entire production process can be monitored remotely via video.
Fiberglass flat sheets offer several advantages over traditional steel and aluminium sheets, particularly in terms of corrosion resistance, lightweight construction and durability. fiberglass flat sheets typically have a lifespan of 15–25 years in corrosive environments, whilst coated steel generally lasts 3–10 years (depending on maintenance). A lightweight truck body constructed with FRP panels can reduce fuel consumption by 10–15%.
Yes, fiberglass sheets (FRP panels) are specifically designed to withstand harsh environments and can be used in humid, chemically aggressive, and heavy-duty industrial settings. Compared to steel, they do not rust or deteriorate quickly; compared to wood, they do not rot easily; and compared to aluminium, they are relatively harder.
Our factory can provide you with a variety of surface options for FRP panels and fiberglass sheets, such as smooth, matte, textured (orange peel texture), non-slip, and gel-coated finishes. In addition, you can choose your preferred colour or various transparent shades.
Yes, fiberglass sheets are lightweight, making them easy to cut, drill, and install using standard tools. We will also number the fiberglass sheets and provide installation diagrams and instructions to reduce installation time and labour costs. Should you encounter any issues, we can arrange a video call or provide after-sales service directly in your area.
For standard products, the minimum order quantity depends on the product specifications. If you require product testing, we can provide samples. We will do our utmost to meet your purchasing requirements; the minimum MOQ is 1 unit.
Your fiberglass Sheet Manufacturing Process
Understanding the manufacturing process for fiberglass flat sheets will help you determine whether this product meets your project requirements. Below is the production process flow for fiberglass sheets (FRP panels):
Step 1: Raw Material Preparation
Before producing FRP panels, we will tailor the process to your specific requirements. The main raw materials include: glass fibre, resin, fillers and additives, and surface materials. The quality of the raw materials directly affects the strength, weather resistance, and service life of the panels. High-quality FRP panels contain at least 35% glass fibre and have a tensile strength of ≥100 MPa. They can be customised to your requirements, with a maximum tensile strength of 400 MPa.
Step 2: Resin Mixing
We will mix and stir the resin with various additives in a specific ratio. The additives mainly include curing agents, accelerators and colourants. If you require custom colours, we will adjust the colourant ratio at this stage. For example, unsaturated polyester resin, vinyl ester resin or epoxy resin, etc. Due to its excellent chemical stability, vinyl ester resin is often used in corrosion-resistant applications. The addition of catalysts and additives is precisely controlled by equipment operating under a pre-set programme; this prevents defects such as reduced curing efficiency and shortened service life caused by incorrect proportions.
Step 3: Lamination
This is one of the core processes. We use a cutter to cut the glass fibre into uniformly sized sheets, which are then laid onto the production platform. The lamination thickness is typically 1 mm to 5 mm, with a tolerance of ±0.2 mm. Rollers ensure that the glass fibre and resin are fully and evenly impregnated. Depending on your required sheet thickness, multiple layers are stacked to achieve the desired structural thickness.
Step 4: Surface Treatment
Next, a suitable gelcoat is selected for lamination according to your requirements. Multiple rollers repeatedly press the gelcoat to ensure that the uncured sheet is fully impregnated with it. We usually control the duration to approximately 3 to 7 minutes to effectively prevent delamination.
Step 5: Curing and Moulding
The unformed fiberglass sheets are conveyed into a high-temperature oven (60–120°C) via a conveyor belt, allowing the resin, fiberglass and gelcoat to fully cross-link and form a stable structure. Proper curing ensures a product lifespan of over 20 years in outdoor environments. Following high-temperature curing, fans cool the sheets to facilitate further curing, and a film is applied to the surface.
Step 6: Inspection and Packaging
Finally, the sheets are cut to customer specifications and the edges are trimmed, with a tolerance of ±0.1mm. Production is now complete, and the sheets enter the final quality inspection and packaging stage. Following quality inspection, to prevent damage during transport, the edges and corners are reinforced and wrapped with protective film.
Our resin system consists of epoxy resin, without any other resins or phenolic resins. The glass fibre content is ≥30% to ensure high-quality products. For the gel coat, you may specify brands such as Ashland or BUFA. Additionally, we can provide you with a Certificate of Analysis (COA) for the raw materials.
We employ a standardised formulation system (ERP/SOP), and our mixing equipment is fitted with an automatic metering system to eliminate or minimise human error. Mixing records for each batch are stored in the computer for easy traceability.
Compared to manual lay-up processes, we use continuous automated production lines to ensure that fiberglass sheets and FRP panels have uniform thickness, higher surface smoothness and greater consistency.
We use a multi-zone, automated temperature control system and a standardised curing time to ensure complete resin cross-linking.