Fiberglass Horizontal Storage Tank

Tanker: The cylinder is typically manufactured using a winding process, primarily circumferential winding, to provide circumferential strength against internal pressure. Axial strength is provided by the combined effect of multiple layers of cross-wrap or circumferential winding.

Head: Typically an elliptical or dished head. This streamlined design facilitates stress distribution and offers significantly better pressure-bearing capacity than a flat head. Heads are often hand-layup or compression molded.

Support System: This is one of the most critical components of a horizontal storage tank.

Saddle Support: The most commonly used support type, typically consisting of two supports.

Fixed End Support: One of the supports has a round anchor bolt hole, providing full fixation. Sliding end support: The anchor bolt hole on the other support is an oblong hole, allowing the tank to expand and contract with temperature fluctuations, preventing excessive thermal stress.

Leg support: Used for small tanks.

Skirt support: Less common and used in specific operating conditions.

Accessory ports: Manholes, feed ports, discharge ports, exhaust ports, level gauge ports, and cleaning ports are typically located at the top and bottom of the tank.

Because of its horizontal design, the selection and installation of level gauges (such as magnetic flap level gauges) is very convenient.

Applications

The unique shape and structure of horizontal storage tanks make them particularly common in the following areas:

Chemical process flow: as pressurized or atmospheric intermediate process tanks, reaction tanks, and temporary storage tanks.

Environmental water treatment: as PAC/PAM and other pharmaceutical storage tanks, and as pressure-type water storage tanks for filtration systems.

Food brewing: as fermentation tanks, liquid mixing tanks, and saccharification tanks.

Transportation and transit: as stationary receiving or distribution tanks, docking with tank trucks.

HVAC systems: as expansion tanks and water storage tanks.

Summary

Glass fiber reinforced plastic (FRP) horizontal storage tanks are an extremely important and flexible solution for process industries and small- to medium-sized storage applications. They perfectly combine the corrosion resistance of FRP with the advantages of horizontal vessels in pressure bearing, emptying, and space utilization.

For standardized needs, factory-manufactured, pre-fabricated products are available; for specialized applications, custom design and production are required.

Horizontal Fiberglass Containers

● Horizontal containers are mostly cylindrical with ellipsoidal ends. When used as truck transport tanks, they can be processed into an ellipsoidal shape.

● Horizontal containers are mostly used above ground. When used underground, they require a specific design based on the burial depth and installation requirements.

● The supports for horizontal containers are called saddles. They are mostly made of steel, but can also be made of FRP. The saddle's wrap angle is 180°, which reduces shearing effects on the container. This ensures safe and reliable operation. If the customer provides their own concrete saddle, the saddle span must meet the design requirements.

● Soft material must be placed between the horizontal saddle and the tank wall during container installation.

Container Specifications:

Among the full range of FRP storage tankswe manufacture, the FRP horizontal tank is engineered for projects where headroom is limited but reliable liquid storage is still required. As a horizontal fiberglass storage tank, it lies along its length rather than standing upright, making it the preferred configuration for rooftop installations, skid-mounted systems, mobile units, and low-clearance plant rooms where a vertical tank simply won't fit.

A FRP horizontal storage tank is built from fiberglass reinforced plastic — a composite material that combines glass fiber reinforcement with corrosion-resistant resin, in the same way steel rebar reinforces concrete. Compared with carbon steel or stainless steel tanks, this horizontal fiberglass tank resists rust, chemical attack, and electrochemical corrosion permanently, without coatings or cathodic protection, which significantly lowers long-term maintenance costs.

Construction and Manufacturing Process

Every horizontal FRP vessel we produce follows a three-layer wall structure:

● An inner corrosion barrier layer (resin-rich, reinforced with C-glass veil) in direct contact with the stored medium, selected according to whether the liquid is acidic, alkaline, or neutral.

● A structural strength layer, wound in alternating spiral and hoop directions using continuous E-glass roving, which gives the tank its pressure rating and load capacity.

● An outer weather-resistant surface layer that protects against UV exposure and mechanical impact.

The tank shell is produced by filament winding, a computer-controlled process that lays down fiber and resin under tension for consistent wall thickness and hoop strength. Both ends of the FRP horizontal tank are formed as domed or dished heads, which distribute internal pressure and mechanical load more evenly than flat ends. The finished vessel is mounted on fiberglass, steel, or concrete-filled saddles engineered to the tank's length and the specific gravity of the stored liquid — typically two saddles for shorter tanks and additional saddles as length and load increase.

Why Choose a Fiberglass Horizontal Storage Tank

● Corrosion resistance across a wide range of acids, alkalis, salts, and organic solvents, with no rust, pitting, or scale buildup

● Lightweight construction that reduces foundation, crane, and installation costs compared with steel tanks of the same capacity

● Smooth, non-porous interior surface that resists buildup, simplifies cleaning, and supports food-grade and potable water applications

● Long service life with minimal maintenance, lowering total cost of ownership over the tank's operating lifetime

● Leak-free, seamless one-piece shell construction for reliable long-term containment

● Design flexibility to accommodate flanged outlets, threaded nozzles, access manways, ladders, and heat-trace systems for specific site conditions

Custom FRP Storage Tank Options

Every FRP horizontal storage tank we build is engineered to project specifications rather than sold off a fixed catalog. Available customization includes:

● Diameter, length, and capacity built to your site and volume requirements

● Resin system matched to your stored medium — vinyl ester resin for acidic media, bisphenol A resin for alkaline media, with alkali-free or medium-alkali glass fiber selected accordingly

● Above-ground, underground, or field-assembled configurations

● Flanged outlets, threaded nozzles, access manways, ladders, and secondary containment

● Heat-trace and insulation systems for temperature-sensitive media

● Saddle and cradle design engineered to your tank's length, weight, and installation site

Manufactured to International Quality Standards

Weitong FRP is a specialized FRP storage tank manufacturer based in Hebei, China, established in 2015. Our production base covers more than 20,000 square meters, with 11,000 square meters of dedicated production workshops, supported by a high-specification pressure test platform used to verify the strength and sealing performance of every FRP horizontal tank before it leaves the factory. Our manufacturing system is certified to ISO9001, ISO14001, and ISO45001 standards, with an annual production capacity of 20,000 tons covering storage tanks up to DN23000mm.

Our team includes 268 employees and 43 experienced engineers who manage everything from resin selection and structural design to filament winding and final quality inspection. Over the past decade, our FRP horizontal storage tanks and other FRP products have been exported to the United States, Germany, Italy, the Netherlands, Greece, Russia, Israel, Pakistan, Uzbekistan, Iran, South Korea, and dozens of other countries and regions, giving us direct experience meeting the technical and compliance requirements of overseas markets.

Get a Quote for Your FRP Horizontal Tank

Whether you need a single custom fiberglass horizontal storage tank or a full project package of FRP storage tanks, our engineering team can review your capacity, resin, and site requirements and provide a detailed technical proposal. Contact Weitong FRP with your required diameter, length, capacity, and stored medium, and our team will respond with a design recommendation and quotation.