Differences Between the Use of GRE Pipe and GRP Pipe in Ship Pipeline

GRE (Glass Reinforced Epoxy) and GRP (Glass Reinforced Plastic) pipes are two types of composite pipes that are commonly used in ship pipelines. While both types of pipes are made from a combination of glass fibers and resin, there are some key differences between them. In this article, we will discuss the differences between the use of GRE pipe and GRP pipe in ship pipelines.

Material Composition

The main difference between GRE pipe and GRP pipe is the material composition. GRE pipe is made from a combination of glass fibers and epoxy resin, while GRP pipe is made from a combination of glass fibers and polyester resin. Epoxy resin is a more expensive and higher quality material than polyester resin, which makes GRE pipe more expensive than GRP pipe. However, GRE pipe is also more durable and has a longer lifespan than GRP pipe.

 GRP Pipes 

Corrosion Resistance

Both GRE pipe and GRP pipe are highly resistant to corrosion, which makes them ideal for use in ship pipelines. However, GRE pipe is more resistant to corrosion than GRP pipe. This is because epoxy resin is a more chemically resistant material than polyester resin. GRE pipe is also more resistant to UV radiation and other environmental factors that can cause degradation over time.

Temperature Resistance

GRE pipe is more temperature resistant than GRP pipe. This is because epoxy resin has a higher glass transition temperature than polyester resin. The glass transition temperature is the temperature at which the material transitions from a hard, glassy state to a soft, rubbery state. GRE pipe can withstand higher temperatures without degrading or losing its structural integrity.

Pressure Resistance

Both GRE pipe and GRP pipe are highly pressure resistant, which makes them ideal for use in ship pipelines. However, GRE pipe is more pressure resistant than GRP pipe. This is because epoxy resin is a stronger and more rigid material than polyester resin. GRE pipe can withstand higher pressures without deforming or rupturing.

 GRP Pipes          

Fire Resistance

GRE pipe is more fire resistant than GRP pipe. This is because epoxy resin is a self-extinguishing material that does not support combustion. GRP pipe, on the other hand, is made from polyester resin, which is a flammable material. While both types of pipes are used in ship pipelines, GRE pipe is preferred in areas where fire safety is a concern.

Installation

Both GRE pipe and GRP pipe are easy to install and require minimal maintenance. However, GRE pipe is easier to install than GRP pipe. This is because GRE pipe is a more rigid material that can be easily cut and joined using standard pipe fittings. GRP pipe, on the other hand, is a more flexible material that requires special fittings and techniques for installation.

Conclusion

In conclusion, both GRE pipe and GRP pipe are commonly used in ship pipelines due to their high corrosion resistance, pressure resistance, and durability. However, there are some key differences between the two types of pipes. GRE pipe is more expensive, but also more durable, temperature resistant, pressure resistant, and fire resistant than GRP pipe. GRE pipe is also easier to install than GRP pipe. When choosing between GRE pipe and GRP pipe for ship pipelines, it is important to consider the specific requirements of the application and choose the type of pipe that best meets those requirements. To get the grp pipe price list, please contact us!