FRPP and fiberglass reinforced plastic

The wear resistance of fiberglass-reinforced plastic is average. As for the service life you mentioned, it depends on what medium is being transported and what the size of the particles is

It’s an acidic liquid without any solid particles; the solution is sprayed from above and falls onto the distributors made of FRPP or FRP

When comparing just the two materials, polypropylene is more resistant to erosion

Based on the processing medium mentioned by the original poster, the manufacturer claims that it can be used for two years without any problems. What’s important is the manufacturer’s level of professional ethics. The fiberglass market in China is currently in a chaotic state, and many people prefer to choose products with lower prices. After all, you get what you pay for – if the price is low, then the quality of the materials used will inevitably be poor

Right, you get what you pay for; since the manufacturer has offered a 2-year warranty, there’s obviously no problem~~~

FRPP improves the resistance of polypropylene to erosion. As for the service life you mentioned, it depends mainly on the size of the particles being transported. However, fiberglass-reinforced plastics are composite materials; by adding some wear-resistant materials such as silicon carbide to them, they can last for two years.

In terms of resistance to erosion, the best option is steel-lined PTFE pipes, as polytetrafluoroethylene boasts excellent wear resistance. Next are nylon tubes. In terms of voltage resistance, various composite materials are good; the key is to find one that is suitable.

In the case of direct scouring, the solid content is very low; if the speed is low, there is basically no scouring at all. If the speed is too high, then the 2-year warranty provided by the manufacturer cannot be upheld, as fiberglass-reinforced plastic is not resistant to wear and corrosion.

1. That’s right; making fiberglass products is truly a test of one’s conscience! 2. Given the first point, it is recommended to use FRPP more often and fiberglass less, as long as the operating conditions permit it! 3. FRPP piping is much easier to install, and repairs during production are also simpler! 4. I have a project going on, and I was badly scammed by a well-known fiberglass manufacturer! During the preliminary design, detailed design, expert review, design review, and when filling out the procurement documents, it was determined that fiberglass-reinforced plastic is the suitable and most appropriate material for the equipment, anti-corrosion measures, and piping components. The operating conditions specified in the purchase request documents and the technical attachments of the procurement contract are clear and complete, with no omissions or errors; they have been acknowledged and confirmed by the fiberglass supplier through signature and seal. As a result, there were multiple leaks at the interface of the overall wrapped fiberglass-reinforced plastic tank and at the head connections, as well as multiple pipe ruptures. We tried to find a supplier to handle the issue, but there were repeated problems; in the end they acted shamelessly, claiming that the choice of materials and manufacturing process was incorrect (in the previous attempts at correction, we had resolved all the issues related to pipe supports and hangers identified by the fiberglass manufacturer, as well as problems related to thermal stress and piping installation, and these issues were acknowledged by the fiberglass manufacturer). It’s absolutely outrageous! In a hydrochloric acid medium at 20%–5%, with a maximum reaction temperature of 107 degrees Celsius, DOW470 resin-based fiberglass was used. I checked relevant information; this material is resistant to hydrochloric acid, and its softening temperature is above 120 degrees Celsius. However, there are conceptual differences regarding the defined softening temperature: some sources indicate 150 degrees Celsius, while others state 129 degrees Celsius. An assessment is currently being carried out to determine whether it’s a case of fake resin, insufficient resin content in the anti-corrosion layer, inadequate wall thickness, or some issue with the structural layer.

Fiberglass can resist corrosion to a certain extent; the solution is to add an anti-abrasion layer on top of the anti-corrosion and waterproof layer that comes into contact with the material, using resin mixed with emery and silicon carbide sand.