Filament Pipe Winding

The HOBAS Filament Winding Process is especially suitable for manufacturing rotationally symmetric units such as pipes and vessels. It is primarily characterized by high precision and reproducibility. Required structures and properties are precisely achieved by winding various layers of different materials. The process thus enables to design and produce pipes that meet all desired chemical, mechanical and thermal specifications.


Filament wound HOBAS Pipes are produced with continuous glass fiber strands that are automatically coated with vinyl or polyester resin and placed onto a rotating mandrel by a CNC machine. HOBAS Winding Machines consist of a rotating device for the mandrel, a fiber guide and fiber storage as well as a resin bath which moves along the rotating mandrel. Depending on the application or the requirement of a thermoplastic inner liner, the mandrel can be alternatively replaced by a liner-pipe of desired material.


The pipe design is based on the standards series DIN 16965 and complies with international standards as well as of course client and project requirements. A HOBAS Speciality is the possibility to replace the inner liner (resin) with thermoplastics such as PVC, PE, PVDF, etc. to combine the durability of a thermoplastic liner with the rigidity of GRP. Connections are usually welded and laminated. 

Scope of Supply  
Nominal Diameter [DN] 25 - 4000 mm
Nominal Pressure [PN] 1 - 40 bar
Temperature range up to 160° C (higher temperatures on request)
Products - Pipes, Joints, Fittings (DIN 16965/66: Type B, D, E, N)
- Process Equipment (PED)
- Vessels
- Customized Shapes and Configurations
Types of Thermoplastic Liner - PVC - Polyvinyl chloride
- PVC-C - Chlorinated polyvinyl chloride
- PP - Polypropylene
- HDPE - High-density polyethylene
- PVDF - Polyvinylidene fluoride
- ECTFE - Ethylene chlorotrifluoroethlyene
- FEP - Fluorinated ethylene propylene
- PFA - Perfluoroalkoxy
- MFA - Tetrafluoroethylene perfluoromethyl vinyl ether

Filament wound HOBAS Pipes have been installed in many projects. Find HERE the latest references.