Introduction
The document provides an overview of the innovative continuous mandrel plant technology developed by VEM S.p.A. for the production of GRP (Glass Reinforced Plastic) and GRE (Glass Reinforced Epoxy) pipes. This technology utilizes a unique lamellar mandrel, offering several advantages over traditional methods.

Production Rates
The production rates for GRP and GRE pipes vary by diameter, with GRP production reaching up to 40 meters per hour and GRE up to 25 meters per hour for diameters ranging from 100 mm to 800 mm.

Plant Characteristics and Advantages
The plant features several innovations compared to traditional Drostholm methods, including:

• Use of a lamellar mandrel instead of a steel band, enhancing productivity and reducing plant size.
• Mechanized internal diameter regulation and an aspiration system for dust and fumes.
• Optional use of UV-curable and hybrid dual-curable resins.
• Inline PU insulation system and quicker stiffness regulation.
• Reduced manpower and maintenance requirements.

VEM Scope of Supply
VEM provides a comprehensive range of equipment and services, including:

• Lamellar filament winding machine with on-line cutting and grinding station.
• Pumping, heating/cooling, and dosing stations for catalyst and resins.
• Pipe and sleeve hydrotesters, and a universal tensile machine for various tests.
• Installation, commissioning, training, and after-sales service.

Pipe Applications
The pipes produced are suitable for a wide range of applications, including potable and household water, industrial and chemical plants, waste and sewer water, irrigation, sea water intake, district heating, process piping, oil and gas, marine, and both onshore and offshore applications.

Pipe Design Variables
The pipes can be designed with diameters from 100 mm to 800 mm, nominal pressures up to 32 bar for GRP and 40 bar for GRE, and stiffness ranging from 1250 to 10,000 N/m². Various joint options are available, including sleeve with rubber gaskets and bonded taper.

Conclusion
The innovative continuous mandrel plant by VEM S.p.A. represents a significant advancement in the production of composite pipes, offering enhanced efficiency, versatility, and application range. The technology is protected by European patent no. EP1138465.