FRP tanks are a type of fiberglass reinforced plastic product. They are a new type of composite material made of glass fiber as a reinforcement and resin as an adhesive, filament winding uses a microcomputer-controlled machine. FRP storage tanks offer corrosion resistance, high strength, light weight, and a long lifespan. Their flexible design and machinability allow them to be applied in various industries, including chemical, environmental protection, food, and pharmaceuticals. FRP tanks offer advantages over traditional materials like steel, such as superior durability, reduced maintenance needs, and a long service life.
The primary manufacturing methods for fiberglass reinforced plastic (FRP) tanks include Hand lay-up and automated technologies such as filament winding or sheet molding compound (SMC) compression molding. After molding, the material solidifies to form a solid structure, which can then be demolded and subjected to additional processing such as fittings.
1. Mold Preparation
A mold, typically made of steel or aluminum, is prepared to define the tank's shape.
A gel coat is applied to the inner surface of the mold; this will become the tank's outer protective layer.
2. Layering and Resin Application
Hand layup: Glass fibers are manually laid into the mold and then saturated with resin.
Filament winding: Continuous strands of glass fibers are impregnated with resin and wound around a rotating cylindrical mold to form the tank's structure.
3. Curing
The resin-soaked glass fibers are allowed to cure, a process that hardens the resin into a rigid, solid composite structure.
4. Demolding and Finishing
After the resin has fully cured, the tank is removed from the mold.
Excess material is trimmed, and any necessary holes or ports are drilled. Fittings, piping, and other accessories are added to complete the functionality of the FRP tank.
5. Quality Control
Finished tanks undergo rigorous quality control, including visual inspections as well as leak and pressure testing, to ensure they meet performance standards.
It is precisely because of the special production process. FRP (fiberglass reinforced plastic) tanks offer numerous advantages, including excellent corrosion resistance, lightweight yet high strength, resulting in a lightweight and durable structure. Their filament-wound, one-piece, non-porous surface offers low maintenance, customizable designs to meet diverse needs, and strong thermal insulation. Furthermore, FRP tanks are durable, boasting a service life of up to 20 years, reducing maintenance costs and offering long-term cost-effectiveness. They can also be customized for specific applications, such as underground or high-temperature storage.
Corrosion Resistance
Fiberglass storage tanks are extremely resistant to a wide range of chemicals, including acids and alkalis. This is a core advantage that distinguishes FRP from other materials, preventing rust and degradation and ensuring long-term structural integrity.
Lightweight and High-Strength
Weighing only one-third to one-quarter the weight of a steel tank of the same specification, they offer exceptional strength, making them easy to transport and install.
Low Maintenance Costs and Long Service Life
The smooth interior resists scaling and is easy to clean, reducing maintenance frequency and long-term costs.
Customization
Fiberglass storage tanks can be manufactured in a variety of sizes, shapes, and configurations, allowing them to be tailored to specific industry requirements and storage needs.
Safety
Many FRP storage tanks are inherently flame-retardant and non-conductive, making them safe to use and enhancing safety in volatile environments. They are also non-toxic and will not leach harmful substances into the stored liquid, ensuring safe storage for a variety of applications, including food and beverages.
According to the use, GRP tanks also can be divided into Chemical storage tank, Food grade FRP tank, GRP pressure vessel and Site winding fiberglass huge tank.
Chemical storage tank
Chemical storage tanks are used to store different types of chemicals. In factories, chemical storage tanks can be used to store a variety of chemicals used in the manufacturing process. These tanks can be used to store liquids, solids, or gases. They protect their contents from environmental factors and prevent damage from accidents. They also protect people and property from hazardous chemicals.
Besides this, chemical storage tanks are the best way to store chemicals safely and reliably. They are designed to withstand the pressure of chemicals, facilitate worker dispensing, and prevent leaks. They are commonly used in various industries, such as food processing, pharmaceuticals, and oil refining. These tanks can be made of materials such as FRP or stainless steel, with FRP being the most preferred choice for storing chemicals. Designed and manufactured to meet specific needs, they can be either fixed or mobile.
What are the different types of Chemical storage tanks?
1. Cone bottom storage tank
The vertical cone bottom storage tank is made of high-strength glass fiber reinforced plastic and resin composite, with excellent high strength and corrosion resistance, suitable for corrosive media such as acid, alkali, and salt. The cone bottom structure can effectively concentrate the sediment, facilitate the sedimentation and emptying of the material, and the tank body adopts a vertical design, which saves space and adapts to a variety of site requirements. With its excellent structural characteristics, it is widely used in chemical raw material storage, sewage treatment, food brewing and other industries. Because of its lightweight FRP material, long life, convenient maintenance, easy installation, strong acid and alkali resistance, it has become a popular choice in the fields of chemical industry and environmental protection.
2. Flat bottom fiberglass tank
Flat bottom fiberglass tank is a kind of typical vertical fiberglass tank used to store any low-viscosity liquids like water, oil, agricultural or industrial chemicals, etc.. These basic shaped tanks are suited to a wide range of conditions where a complete drain is unnecessary or unwanted.
The flat bottom FRP tank's top can be flat head, elliptical head, dish head as customer requires.
The tank specifications we can manufacture ranges from DN800mm to DN 25000 mm.
3. FRP chemical processing tank
Chemical processing tank is the important equipment for chemical processing in many industries, such as chlor-alkali, titanium dioxide, water treatment etc. It is mainly used for processing reaction or mixing ch
emicals. Its design and manufacture meet the stringent requirements of many industries, so these tanks are very suitable for storing a variety of liquid products, including highly corrosive chemicals such as acids, alkalis, oils, etc. Each chemical processing tank inner layer is professionally designed and constructed to suit for different liquid. In addition, such fiberglass tanks are subject to various tests and experiments to ensure that they can withstand chemical and physical challenges. Therefore, it can be used under high temperature and high pressure, and has good anti-seepage, anti-leakage and anti-overflow performance.
4. FRP horizontal tank
FRP horizontal tank is a type of fiberglass reinforced plastic horizontal tank. It is an efficient and durable storage device that can be widely used for chemical holding, such as HCL storage tank, waste acid storage, strong acid, strong alkali, sulfuric acid and other organic solvents. Benefit from the basic property of FRP --high corrosion resistance. Horizontal FRP tanks have great design flexibility and excellent tank wall structural performance. Compared with traditional metal tanks, the advantages of FRP tanks are that they are light and strong, which saves infrastructure costs during transportation and installation. The design is flexible, it can meet diverse needs, environmentally friendly and pollution-free, Therefore, FRP tanks are the most suitable environmentally friendly storage.
5. GRP transportation tank
GRP transportation tank, also known as GRP transportation vessel or FRP transportation tank. It's usually placed horizontally and fixed on the transport vehicles on road, rail or water by attachment brackets, handrails and ladders. They are easy to handle and assemble.
The tank shell is made of GRP (also known as FRP or GFRP) material. The accessories in the retention system can be made of GRP, carbon steel, or stainless steel according to customer's requirements.
Food grade FRP tank
With food safety increasingly a public concern, choosing safe, reliable, and compliant storage equipment is a top priority for companies involved in food, beverages, winemaking, and condiments. Food-grade fiberglass tanks (FRP) are gradually replacing traditional stainless steel and plastic tanks with their superior corrosion resistance, sterile interior, and exceptionally long lifespan, becoming a core storage solution for the modern food industry.
Why do leading food companies choose FRP tanks?
1. Absolute Safety and Certified Compliance
Our tanks are constructed from high-quality food-grade vinyl ester resin and adhere strictly to food safety standards throughout the entire production process. The smooth, seamless lining fully complies with FDA (Food and Drug Administration) and NSF (National Sanitation Foundation) standards, ensuring that the stored media is free of leachable and contamination, safeguarding the pure flavor and safety of your products.
2. Excellent Corrosion Resistance for a Wide Range of Applications
FRP exhibits excellent corrosion resistance against acids, alkalis, and salts. Perfectly suited for:
Beverage Industry: Brewing and storage of juices, soft drinks, liquor, beer, and wine.
Condiment Industry: Fermentation and temporary storage of soy sauce, vinegar, cooking wine, and sauces.
Dairy Products and Food Additives: Storage of raw materials such as dairy products, citric acid, and potassium sorbate.
3. Long-lasting, Durable, and Economical
Compared to stainless steel tanks, which are prone to intergranular corrosion and pitting, food-grade fiberglass tanks are rust-proof, highly resistant to aging, and have a designed service life of over 20 years. While the initial investment may be similar, the virtually maintenance-free design significantly reduces overall operating costs, making them a highly cost-effective long-term investment.
4. Lightweight, High-Strength, and Easy to Install
Weighing only one-quarter of comparable steel tanks, they are easier to transport and hoist. They can be flexibly installed on rooftops or indoors, effectively saving on construction costs.
What are the different types of Food grade FRP tanks?
1. FRP Soy Sauce Fermentation Tank
The soy sauce fermentation process has certain requirements on the material of the fermentation container. The new composite material of FRP tank will not react chemically with soy sauce, ensuring the quality and safety of soy sauce. In addition, the design and manufacture of FRP soy sauce fermentation tanks follow relevant standards and specifications, providing strict guarantee for product quality and safety. It also has excellent corrosion resistance and good thermal insulation properties, enabling it to maintain good working performance under various conditions. The FRP tank wall is smooth and tidy, the tank body is neat and elegant, and it is easier to maintain and clean.
2. GRP Insulation Tank
GRP insulation tanks are specially designed to keep a relative constant temperature. The insulation materials are PU foam, etc. While after the insulation, apply fiberglass or other suitable materials to cover and protect the insulation. The fiberglass insulation tank we made most is the ice slurry storage tank and salt water tank. The ice slurry storage tank is specially designed for fish farms. They use the ice slurry to chill fresh fish and prawn. The insulation layer is 75-100mm thick Polyurethane . and outer protect skin is FRP also. Size: DN800mm – DN4000mm or as per customer required sizes.
GRP pressure vessel
Are you troubled by frequent corrosion, high maintenance costs, and short service life of metal pressure vessels? "GRP pressure vessels"-the answer you searched for-are the ultimate solution to these problems. They're not simply a replacement, but a revolutionary upgrade based on composite material technology, providing safer, more economical, and longer-lasting pressure-bearing equipment for industries such as chemical, environmental protection, pharmaceuticals, and power generation.
Why choose our GRP pressure vessels?
1. Extreme corrosion resistance, say goodbye to rust and contamination
Made from a composite of vinyl ester/epoxy resin and glass fiber, they offer unparalleled corrosion resistance to acids, alkalis, salts, and organic solvents. They completely eliminate rust, scaling, and ionic contamination from metal vessels, making them particularly suitable for demanding environments such as seawater desalination, chemical intermediate storage, and electroplating solution processing, ensuring media purity and operational safety.
2. Lightweight and high strength, with safety pressures far exceeding standards
Through a computer-controlled filament winding process, our vessels achieve optimal strength distribution in the circumferential and axial directions through precise design. Its specific strength (strength/density) is far superior to that of steel, yet its weight is only one-third to one-quarter that of a steel tank of the same specification, making it easy to install and transport. All products undergo rigorous hydrostatic burst testing, and their operating pressures and safety factors fully comply with or exceed international and domestic standards such as ASME, DIN, and GB, ensuring safety and reliability.
3. Long Lifespan, Maximizing Comprehensive Benefits
The corrosion-resistant nature of these tanks ensures an exceptionally long service life. Throughout their lifecycle, unlike steel tanks, they require no regular anti-corrosion coating, weld repairs, or wall thickness testing, significantly reducing maintenance time and costs. While the initial investment may be similar to that of stainless-steel tanks, their extremely low maintenance costs and extended service life provide an impressive long-term return on investment (ROI).
4. Customization to Meet Diverse Process Requirements
We offer comprehensive customization services, designing and manufacturing to meet your process needs:
Pressure Range: From vacuum to high pressure
Media Type: Various acid, alkali, and salt solutions, chloride and brine solutions, chemicals, process water, etc.
Dimensions: Diameter, end cap type, and port orientation can all be customized.
Choosing us means choosing a reliable safety commitment.
When you search for "GRP Pressure Vessel Manufacturer," you're looking for a professional partner you can trust. We're not just a manufacturer; we're your technical advisor for your project.
What are the different types of GRP pressure vessels?
1. FRP Multimedia Filter for Sea Water
FRP multimedia filter is a kind of FRP pressure vessel and also an important water treatment equipment. It mainly uses an aerobic treatment system to filter suspended matter, sewage, silt and other impurities in the water, reduce the turbidity of the water, and achieve the purpose of clarifying the water quality. The filter has the advantages of low cost, high operating efficiency, small footprint and long service life. Due to the excellent performance of its internal structure, efficient cleaning ability and long service life, it is favored by the majority of users and widely used in the field of water treatment.
2. GRP Filter for Water Treatment Process
GRP filter is a kind of pressure equipment made of FRP. Because its raw material is a new type of high-strength, corrosion-resistant composite material composed of glass fiber and resin, GRP filter has excellent characteristics such as corrosion resistance, high temperature resistance, light weight and high strength. It is usually used for filtering and purifying liquids or gases, and common application scenarios include water treatment, chemical industry, food processing, pharmaceutical industry, etc. Due to its excellent corrosion resistance and good filtering effect, it can meet the strict requirements of most industrial industries for filtering and purifying liquids or gases, making FRP filters a new generation of efficient, economical and environmentally friendly filtering equipment.
Site Winding Fiberglass Huge Tank
On-site winding technology for giant fiberglass tanks is the ultimate solution for addressing the need for ultra-large, corrosion-resistant storage capacity exceeding 10,000 cubic meters. It overcomes the transportation limitations of traditional tank manufacturing by enabling automated winding directly on-site, resulting in seamless, corrosion-resistant tanks with exceptionally long lifespans. This technology is particularly well-suited for the construction of giant storage tanks for municipal sewage, chemical, and biogas applications, offering significant advantages such as low overall costs and manageable construction schedules, providing reliable and economical core infrastructure for large-scale projects.
What are the different types of Site winding fiberglass huge tanks?
1. HCL Storage Tank
The HCL storage tank is a type of site winding FRP huge tank, which is mainly used to store corrosive liquids such as hydrochloric acid for potash fertilizer industry. Due to its excellent corrosion resistance, it is widely used in industrial production and the chemical industry. Its main features are strong corrosion resistance, light weight and high strength, flexible design, which can meet the needs of different industries, simple process, one-time molding, outstanding economic effect, and especially suitable for products with complex shapes, small quantities, and difficult molding, and long service life. In addition, the site winding FRP huge tank is easy to install, and the production equipment can be directly transported to the site for production and installation, which also solves the problem of inconvenient transportation of large containers.
2. Desalinated Seawater Storage Tank
FRP seawater storage tank is also a kind of FRP on-site winding large storage tank. It is a high-performance storage tank. It is mainly a new type of composite material made by controlling machine winding with FRP fiber as reinforcing agent and resin as adhesive. This material combines the high strength of glass fiber and the corrosion resistance of resin, making FRP storage tanks have excellent corrosion resistance, high strength, long life, insulation and other characteristics. Due to its good sealing performance, it can effectively prevent gas, liquid and other leakage, and is widely used in various industrial fields.
How to choose the right FRP tank?
1. Determine Requirements
Fluid Characteristics: Identify the media to be stored (e.g., water, chemicals, fuels) and its characteristics, including temperature, pressure, corrosivity, and vapor pressure.
Capacity: Calculate the required capacity, taking into account current and future needs.
Project Requirements: Determine the required diameter, pressure (psi), and any required accessories.
Environmental Conditions: Assess site conditions, such as temperature, UV exposure, and seismic activity, to ensure the tank can withstand environmental impacts.
2. Material Compatibility: Select a fiberglass resin that is compatible with the stored media (e.g., vinyl ester for high-temperature or corrosive environments) to prevent corrosion and contamination.
Tank Shape and Design: Select a shape and configuration that suits your application and site. Vertical tanks are suitable for water, while horizontal tanks are ideal for underground storage.
Tank Construction: Determine tank thickness, structural reinforcement, and any necessary coatings or linings.
Compliance: Ensure the selected tank complies with relevant industry standards (e.g., ASTM, AWWA) and design specifications to ensure safety and avoid legal issues. Site Space: Check the space available on site to ensure the selected tank is of appropriate size, including diameter and height.