Why Choose Our FRP Round Tube?
- Withstand 300-600 MPa tensile strength, high toughness impact resistance, not easy to break.Â
- Diameter range 10mm-300mm, can be seamlessly connected with elbows, tees, flanges and other fittings.Â
- Can be used for a long time in acidic and alkaline environments, wet working conditions and temperatures from -40°C to 120°C.Â
- Easy to process, convenient to cut and drill, saving your time and cost.
Your Reliable FRP Round Tube Supplier in China
Each of our FRP Round Tube undergoes strict material selection, precision molding and multiple quality testing sessions to perfectly match your project needs. Contact us now for a reliable FRP Round Tube solution!
Our Products
Ideal for general industrial tubing, structural support and equipment installation. Meets the basic needs of most industrial and municipal projects.
Larger diameters are suitable for municipal drainage, chemical plant softlines and water treatment projects. Can carry high liquid flow and pressure requirements.
Smaller diameter, suitable for fine tubing systems, instrumentation connections and support structures. Convenient and flexible layout.Â
Customized lengths, diameters and thicknesses to meet project requirements. Meet special project tubing design requirements.
It can be used with tees, elbows, flanges and other fittings. Complex tubing layout and fast installation can be realized.
Features of FRP Round Tube
FRP material can resist the erosion of acid, alkali, salt spray and many kinds of chemical media, avoiding corrosion perforation phenomenon and guaranteeing the long-term stable operation of the tubing system.
The fiber-reinforced composite structure ensures that the size and shape of FRP Round Tube is stable, safe and reliable during long-term use.
FRP Round Tube can be cut and processed on site according to your project needs, accelerating the connection of components. Improve the installation efficiency of your project.
The inner wall is flat and smooth, which can well reduce the fluid resistance and improve the conveying efficiency. Reduces the risk of impurity deposits and system clogging.
Supporting a wide range of diameter and length options, it can be freely customized according to your project and adapted to different tubing systems.
FRP is non-conductive, suitable for industrial equipment and engineering environments that require insulation, which reduces the risk of electrical leakage.
It can be used with a variety of standard connections, easy to build complex tubing systems, strong engineering adaptability.
FRP Round Tube does not require additional anticorrosion treatment, less maintenance workload in the later stage, reducing costs.
High Structural Stability
Our FRP Round Tube is made of multi-layer glass fiber reinforcement and high performance resin composite. The tube structure is uniform and dense. It maintains its shape stability under long-term load, vibration or temperature change environments. This effectively reduces the risk of micro-deformation of FRP Round Tube in high-pressure conveying or equipment support, and reduces the maintenance rate of the equipment.
Flexible Adaptation of Multiple Sizes
Our FRP Round Tube is available in a variety of diameters, lengths, and thick wall combinations to meet the tubing design needs of your different projects. Whether it’s a small-diameter precision tube or a large-diameter drainage main, you can choose from a wide range of flexible options to seamlessly match your tubing system to the structure of your facility. FRP Round Tube can be cut, drilled or specially customized directly at the project site. Easy installation and efficient construction.
Mature Production System
We have 26 years experience in the production of FRP Round Tube. From raw material acceptance, glass fiber pretreatment, resin proportioning to pultrusion molding and final inspection, we have a complete production layout and standardized management system. Each process is in strict accordance with standard operating procedures. We are able to monitor the dimensions, wall thickness and surface quality of FRP tube in real time to ensure the structural integrity and precision of each batch of round FRP tube is stable and reliable. A proven production system ensures that your orders are delivered on time and that each round fiberglass reinforced plastic tube is consistent during transportation and on-site installation. We provide reliable and controllable materials for your projects.
Applications
Large Diameter FRP Round Tube High pressure resistance, able to withstand continuous liquid impact flow, to ensure stable and smooth urban drainage system.
Good acid and alkali resistance and chemical resistance, able to safely convey corrosive chemical liquids. Extend the service life of the tube.
Smooth inner wall and low deposition characteristics can reduce the accumulation of impurities in the tube, guaranteeing long-term and efficient water treatment processes.
High structural stability and strong impact resistance, able to withstand the weight and vibration of the equipment, to ensure that the mechanical installation is stable.
High temperature resistance enables it to be used under long-term hot working conditions, maintaining stable circulation of system fluid and preventing tube deformation.
Strong corrosion resistance can guarantee that FRP round tube can be used for a long time under high temperature and high salt, and corrosion perforation is not easy to occur.
Small diameter FRP Round Tube is easy to process, customize lengths and connections. It can meet the requirements of precision tubing layout and equipment connection.
FRP Round Tube has a uniform cylindrical cross-section, which allows them to distribute forces evenly when subjected to pressure and bending loads. It is ideal for fluid transfer, support rods or high pressure tubing systems. FRP square tube is rectangular or square in cross section, it has better bending strength and stable support ability. It is commonly used in frame structures, platform supports or equipment mounting brackets.
The weight of FRP Round Tube is only 30-40% of steel tube, which is more convenient for transportation and installation. It can also reduce your construction cost. The FRP material is corrosion-resistant and does not require additional anti-corrosion coating, which reduces the cost and extends the service life at the same time. It is non-conductive and safe. FRP composite structures also have high strength and toughness, with a low risk of rupture. It is easier to process and customize and can flexibly match various fittings to improve construction efficiency.
FRP Round Tube has standardized length and diameter specifications. It is very convenient for batch loading and on-site stacking. Plan transportation routes according to your project needs, reducing the number of lifts and carries. Tube connections do not require complex specialized equipment, you can directly use universal support brackets and fixings for positioning during installation.
The surface of FRP round tube is not easily structured or eroded by chemical media and does not require regular coating or anti-corrosion treatment. In general, routine inspection and cleaning is carried out once every 3-5 years. Maintenance mainly focuses on inspection and replacement of tube supports and connections. It has a long overall maintenance cycle and low cost. It generally accounts for about 2-5%/year of your initial tubing investment. It saves cost and labor for your long-term operation.
Our standard lead time for FRP Round Tube is 15-25 business days, depending on your project’s tube specifications, quantity customization requirements. Small quantities or regular specifications can be prioritized for production and expedited shipment. Large quantities or special customized FRP round tube need to extend the production time appropriately. We provide full logistic tracking service to make sure your project is on schedule. You can contact us if you have any questions.
What Is FRP Round Tube?
FRP Round Tube is a kind of hollow round tube made of glass fiber reinforced material and thermosetting resin composite. It is usually molded by pultrusion or winding process and has the characteristics of high strength, corrosion resistance, light weight and easy transportation and installation. It is often used in industrial, construction, chemical, water treatment, power and municipal engineering projects. It has stable bearing capacity, high strength and hardness, and very good acid and alkali resistance and corrosion resistance. It is able to meet the tube transportation, structural support, frame production and various industrial equipment supporting facilities, adapting to a variety of environments and working conditions.
What Resin Systems Are Used in FRP Round Tube?
The resin systems commonly used for FRP round tube are unsaturated polyester resins, vinyl ester resins and epoxy resins. Unsaturated polyester resins are able to meet the basic corrosion resistance and strength requirements of the project and are suitable for general industrial support, municipal drainage and general water conveyance systems. It is also relatively low cost. Vinyl ester resins offer better chemical resistance. It is able to withstand acid, alkali, salt and solvent corrosion for long periods of time. It is well suited for chemical plant piping, wastewater treatment systems and coastal high salt environments. Epoxy resins have relatively higher structural strength and bonding properties, making them ideal for high-strength load-bearing structures, electrical insulation supports and projects that require high dimensional stability.
What Are the Standard Sizes of FRP Round Tube?
| Diameter (mm) | Wall Thickness (mm) | Standard Length (m) | Typical Application |
| 10–50 | 1–3 | 2–6 | Small-scale tube, instrument connections |
| 51–100 | 3–6 | 2–6 | Industrial fluid transport, moderate pressure systems |
| 101–200 | 5–10 | 2–6 | Large-scale drainage, chemical plant tubing |
| 201–300 | 8–15 | 2–6 | Municipal water systems, high-flow tube |
How to Choose the Right FRP Round Tube ？
You need to choose the FRP round tube specification in combination with your project usage, fluid type, pressure requirement and installation space. The diameter, length and wall thickness of FRP Round Tube directly affect the tube carrying capacity, pressure resistance and construction convenience. Generally speaking, large diameter FRP round tube is suitable for municipal drainage, chemical plant transportation and circulating water system. Small diameter FRP round tube is suitable for precision piping systems, instrumentation connections and support structures.
| Project Application | Recommended Diameter/Wall Thickness | Tube Layout | Number of Elbows | Compatible Fittings |
| Municipal Drainage | Large diameter / Thick wall | Long horizontal main tube | Few | Compatible with elbows, tees, flanges |
| Chemical Plant Tubing | Large diameter / Thick wall | Horizontal or slightly sloped | Moderate | Compatible with corrosion-resistant fittings |
| Circulating Water System | Large diameter / Thick wall | Horizontal or looped tube | Few | Compatible with elbows, flanges |
| Precision Tubing System | Small diameter / Medium-thin wall | Multi-branch, complex layout | Many | Customizable connections |
| Instrument Connections | Small diameter / Customizable | Vertical or short straight segments | Moderate | Custom interface fittings |
| Support Structures | Small diameter / Customizable | Vertical or inclined arrangement | Moderate | Compatible with mounting brackets |
What Connection Methods Are Available for FRP Round Tube?
Our FRP Round Tube supports flange connection, socket connection, sleeve connection and mechanical fastening connection.
Flange Connection:
Typically manufactured using a one-piece molded or bonded process to withstand the internal pressures and piping loads of constant operation. Ideal for chemical plants, water treatment plants and pump station piping that requires frequent disassembly or maintenance. Flanged connections allow for easy interfacing of FRP round tube with pumps, valves, and metal piping systems. This can greatly improve your project system compatibility and maintenance efficiency.
Socket Connection:
The socket connection is used with structural adhesive or sealing material to secure and seal the tube. Socket connections are efficiently installed and are suitable for piping systems that require continuous straight-line transportation, such as municipal drains, recycled water systems and long-distance transportation lines. It can evenly disperse the axial stress in tube operation. It reduces the deformation of FRP round tube body and the concentration of force at the connection point, and prolongs the service life of your tube.
Sleeve Connection:
Structurally reinforced connection of two FRP round tube sections by means of an external sleeve. Sleeve connection is suitable for long-distance transportation systems and tubes that require certain displacement compensation ability. It is able to reduce the localized stress of the tube due to temperature changes or load changes. This improves the overall operational stability of the piping system.
Mechanical Fastening Connection:
Usually, U-clips, brackets or clamps are used to fix the FRP round tube. This type of connection is suitable for equipment support structures, guardrail systems and non-pressure applications. It is quick to install, does not require complex construction techniques, and is very convenient for on-site adjustment and structural positioning.
What Quality Inspections Are Performed Before FRP Round Tube Leave the Factory?
Our FRP round tube will go through a number of factory tests, including precision of dimensions, structural integrity, material properties and other items. To ensure that each FRP round tube meets the requirements of the project.
Dimension Inspection: Measure the outer diameter, thickness and length to ensure that each dimension is within the tolerance range, so as to avoid the problem of improper fit or sealing failure during installation.
Appearance Inspection: Check the surface of the FRP round tube for defects such as delamination, bubbles, cracks or resin enrichment. Prevent problems such as leakage, rupture or localized stress concentration of FRP round tube during operation.
For FRP round tube used for load carrying or transportation purposes, we conduct sampling tests for axial strength and circumferential stiffness. We ensure that they have the ability to withstand internal pressure or external loads. At the same time, we will test the resin curing state of FRP round tube to ensure that the material has been fully cured to avoid deformation or performance degradation at a later stage. In some projects, we will also carry out interface matching tests to confirm that the FRP round tube can be properly connected with flanges, couplings or other tube fittings.
Through these quality tests, we can ensure that each batch of FRP round tube perfectly meets your project standards in terms of structural strength, dimensional consistency and on-site installation suitability.
