1. Common Repair Methods for Leaking Fiberglass Reinforced Plastic (FRP) Pipes

Fiberglass reinforced plastic (FRP) pipe leaks are typically caused by corrosion, external damage, improper installation, or aging. Repair methods fall into two main categories: outage repair and pressurized repair.

1. Outage Repair (Requires Service Interruption)

This method requires draining the pipe and performing a complete repair.

Replacing the Pipe Section: The damaged section is cut and replaced with a new section of FRP pipe of the same specification, using either socket bonding or flange connections. This is the most thorough, but also the most tedious, method.
Fiberglass Composite Material Repair:
Steps: Drain the pipe, sand the leak and surrounding area, clean and dry, fill the leak with resin putty (containing chopped fiber), then apply fiberglass cloth and resin by brushing in layers until the desired thickness and strength are achieved.

Advantages: The repaired section is strong and integrated with the original pipe.

Disadvantages: Requires specialized technicians, takes a long time to complete, and requires waiting for the resin to cure, making it unsuitable for emergency repairs.

2. Under-Pressure Repair (No Water Suspension)

This method is suitable for emergency situations where production cannot be shut down and is currently the most popular repair method.

Using a pipe repair clamp (clamp type): This is the most common and quickest under-pressure repair method, which will be explained in detail below.
Using a leak sealant/steel clay: A fast-curing sealing material that is applied directly to the leak like putty. It is suitable for temporary emergency repairs of very small leaks, but its reliability and durability are relatively poor.

2.Benefits of Using a Pipe Repair Clamp

A pipe repair clamp (also known as a "half joint" or "pipe clamp") is a standardized, factory-fabricated repair device designed for leaky pipes. For fiberglass reinforced plastic pipes, its benefits are particularly significant:

1. Fast and efficient, significantly reducing downtime losses
   This is its core advantage. Traditional water outage repairs can take hours or even days, while installing a pipe repair clamp typically takes only 30 minutes to an hour. For industries with continuous production, such as the chemical and water supply industries, every minute of downtime means significant financial losses, and pipe repair clamps can minimize these losses.
2.  No production downtime required, works under pressure
   Pipe repair clamps are specifically designed for leak repair under pressure. Installation eliminates the need to drain the pipeline or stop media flow, enabling truly uninterrupted repairs and ensuring uninterrupted production and service.
3.  Reliable sealing and strong pressure resistance
   High-quality pipe repair clamps utilize high-quality rubber seals (such as EPDM and NBR) and utilize high-strength bolts (typically stainless steel or galvanized carbon steel) to apply uniform radial pressure, ensuring a tight seal.
   The designed pressure resistance typically reaches 1.0 MPa, 1.6 MPa, or even higher, meeting the operating pressure requirements of most industrial pipelines。
4. Wide adaptability and wide application
   Pipe repair clamps are available in various standard sizes to accommodate pipes of varying diameters.
   They can be used not only to repair holes and cracks, but also to repair leaks at pipe joints.
   In addition to repairing fiberglass reinforced plastic (FRP) pipes, they are also widely used to repair pipes made of various materials, including steel, cast iron, cement, and plastic (PE/PVC).
5. Easy Installation, No Special Skills Required
   The installation process is straightforward: clean the pipe surface → apply sealant/place the emergency repair clamp → align and tighten the bolts.
   Ordinary workers can operate with minimal training, eliminating the need for specialized technicians like with hand-layup fiberglass pipes.
6.  Sturdy Construction, Corrosion Resistance, and Long Life
   The pipe repair clamp body is typically made of ductile iron or stainless steel, offering high mechanical strength and corrosion resistance. Its designed service life matches the original pipe, making it a semi-permanent repair solution.
7.  High Cost-Effectiveness
   While the procurement cost of a single pipe repair clamp may be higher than some material costs, the overall cost-effectiveness is very high when considering the saved downtime, labor, and logistics costs, as well as the long-term reliability it provides.

Recommendation: For sudden leaks in fiberglass pipes, especially in emergency situations where rapid resumption of production is essential, using an emergency repair clamp is undoubtedly the best and preferred solution. It is a modern pipe repair technology that combines efficiency, reliability, and cost-effectiveness.

When choosing pipe repair clamps, please note the following:

1. Accurately measure the outer diameter of the pipe to ensure you purchase the correct size pipe repair clamp.

2. Understand the corrosiveness and temperature of the medium to select the appropriate seal material (e.g., oil-resistant, acid-resistant, high-temperature-resistant, etc.).

3. Purchase high-quality products from reputable suppliers to ensure safety.

The housing is typically made of metals such as ductile iron and carbon steel, which are corrosion-resistant and high-strength. It can last the same life as the original pipe, eliminating the need for frequent repairs. Baoshuo brand carbon steel half joints are available in a variety of rubber materials, including NBR, EPDM, FKM, and silicone rubber. The half joint body is available in Q235 carbon steel and 304 and 316L stainless steel.

The following are Baoshuo brand oil-resistant pipe repair clamps, high-temperature-resistant pipe repair clamps, acid- and alkali-resistant pipe repair clamps, stainless steel pipe repair clamps, high-pressure-resistant pipe repair clamps, and large-diameter pipe repair clamps.