FRP Mortar Pipe or RPM Pipe

Diameter	DN15-4000mm
Length	6m/12m per piece
Pressure	0.1MPa, 0.6MPa, 1.0MPa, 1.6MPa
Stiffness	2500Pa, 5000Pa, 10000Pa

Product Details

The RPM pipe is composed of an inner layer, wound layer, resin-mortar layer, and exterior corrosion-resistant layer. Its density is 1.7~2.1, which is one-fifth of a steel pipe, one-fourth of a cast steel pipe, and three-fourths of a prestressed concrete pipe.

As the filament-wound reinforced structure exists on both sides of the resin-mortar layer, and its fiber content is 70%, it meets the strength requirements of the pipeline. Additionally, since the resin-mortar layer is located in the middle low-stress area, it increases the stiffness without any decrease in the pipe’s strength.

The corrosion-resistant property of RPM pipe is mainly relied on the inner resin, and be selected in accordance with the condition of the media. lt is adopted the reinforced rich resin laver by fiberglass, the resin content is 80%, it can ensure that the RPM pipe prevent corrosion and leakage.

The inner surface of the RPM pipe is very smooth, with a very small roughness coefficient. Not only is the inner surface of a newly produced pipe smooth, but it also remains just as smooth after many years of use, with no adhesion of seaweed or other aquatic derivatives. The water conservancy factor (C) can be maintained between 140 and 150 over a long period.

According to relative testing, its friction factor (f) is 0.000915, which is lower than that of concrete pipes (f = 0.00232) and steel pipes (SP) (f = 0.00179). This significantly reduces pressure head loss and increases flow capacity by more than 20%. Therefore, for the same conveying capacity, a lower-diameter RPM pipe can be used, reducing project investment costs.

Productive Process

The production of RPM (Resin Mortar Pipe) pipes adopts a length-fixed winding process controlled by a computerized system, ensuring precision and consistency in quality. The process consists of the following key steps:

1. Inner Liner Formation

• The inner liner is manufactured on a mandrel using the fiber glass winding process.
• A resin-rich layer is applied to enhance corrosion resistance.
• Surfaces exposed to chemical environments are reinforced with a 10-20 mil thick chemical surfacing mat (E-glass) to ensure durability.
• Once the resin hardens, the liner is ready for the next phase.

2. Interface Layer Application (Leakage-Proof Layer)

• A leakage-proof layer is created by reinforcing the pipe with at least three layers of 1.5 oz chopped strand mat.
• This layer enhances the sealing performance, preventing leaks and improving structural integrity.

3. Structural Layer Formation

• The structural layer is formed by winding continuous strand fiberglass roving, ensuring high strength and mechanical stability.
• The resin content in this layer is maintained at 20-40% to balance rigidity and flexibility.
• This layer serves as reinforcement for the inner lining and interface, enabling the pipe to withstand external loads and ensuring overall strength and stiffness.

4. Resin-Mortar Mixture Addition

• A mixture of mortar and resin is added into the structural layer to increase stiffness without compromising strength.
• The resin-mortar core provides additional mechanical stability and optimizes the pipe’s performance under various load conditions.

5. Outer Protection Layer Application

• The exterior surface is reinforced with chopped strand fiberglass for additional protection.
• A resin-rich coating is applied over the fiberglass layer, enhancing weather resistance, UV resistance, and durability.

6. Curing & Quality Control

• The pipe undergoes a controlled curing process to ensure proper resin hardening and bonding between layers.
• Rigorous quality inspections are conducted, including:
  • Dimensional accuracy checks
  • Strength and stiffness tests
  • Leakage and pressure resistance tests

Application

FRP mortar pipes are widely used in industries such as chemical processing, wastewater treatment, power plants, seawater desalination, oil and gas, and municipal water supply. Their resistance to chemical corrosion and high mechanical strength make them ideal for various applications.

Packing and Shipping

Company Profile

Hebei Aoliande Chemical Equipment Co., Ltd. is a leading manufacturer specializing in the production and sales of FRP pipes and pipe fittings. With years of expertise in fiberglass-reinforced plastic (FRP) technology, we provide high-quality corrosion-resistant piping solutions for industries such as chemical processing, water treatment, marine engineering, power plants, and infrastructure projects.

Our company has obtained ISO9001, ISO14001, ISO45001, and RoHS certifications, along with SGS certification, ensuring strict quality control, environmental sustainability, and compliance with international standards. We utilize advanced microcomputer-controlled filament winding and composite molding technology to manufacture high-strength, lightweight, and durable FRP piping systems. Our main products include FRP mortar pipes (RPM pipes), FRP process pipes, FRP cable casing pipes, FRP insulation pipes and FRP pipes for ocean engineering and shipbuilding,.etc. In addition, we provide a full range of FRP pipe fittings such as FRP flanges, elbows, tees, and reducers, offering complete solutions for various applications.

With our own manufacturing facility, we ensure consistent quality and cost-effective solutions. Our precision-engineered FRP pipes are known for their superior mechanical properties and long-term durability. We export our products worldwide, including to the United States, Canada, Australia, Brazil, Japan, Germany, Russia, India, Malaysia, Indonesia, and Egypt. We offer tailored FRP piping systems to meet specific project requirements and provide comprehensive technical support, from design consultation to on-site installation guidance.

At Hebei Aoliande, we are committed to delivering high-performance FRP piping systems that offer exceptional durability, corrosion resistance, and cost savings. Contact us today to learn more about our FRP pipes and fittings.

FAQ

Q1: Are you a manufacturer or a trader?
A: We are a manufacturer of FRP pipes and fittings with our own factory, ensuring quality control, competitive pricing, and customized solutions. We provide direct factory support, technical assistance, and after-sales service. Welcome to inquire!
Q2: How about the delivery time?
A: Normally, 10-15 days after receiving the deposit to finish the order for a 20′ container. Welcome to ask for the detailed delivery time according to your order quantity!
Q3: What’s the price of FRP/GRP pipes?
A: Depends on the diameter range and quantity, welcome to inquire!
Q4: How can you guarantee the product quality?
A: We have the quality control system ISO9001:2015, and it’s been followed strictly. We also have the professional QC team, and each our package worker will be in charge of the final inspection according to the QC instruction beforepacking.
Q5: Can RPM pipes be customized for specific applications?
A: Yes, we provide customized RPM pipe solutions to meet different project requirements, including variations in diameter, pressure rating, wall thickness, and liner material to optimize performance for specific industrial needs.
Q6: Are RPM pipes suitable for underground applications?
A: Yes, RPM pipes are well-suited for underground applications, including sewer and drainage systems, due to their high stiffness, load-bearing capacity, and resistance to soil and environmental corrosion.
Q7: Do you provide technical support for RPM pipe installation?
A: Yes, we offer comprehensive technical support, including design consultation, installation guidance, and after-sales services to ensure the successful implementation of your RPM pipe system.