Filament Pipe Winding
The HOBAS Filament Winding process is especially suitable for manufacture of rotationally symmetric units such as pipes and vessels. It is primarily characterized by high precision and reproducibility. Required structures and properties can be 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 laid down 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 special feature is the possibility to replace the inner liner (resin) with thermoplastics such as PVC, PE, PVDF, etc. to combine the durability of the 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)
- 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.
- Resin-rich outer layer
- Load-bearing laminate
- Resin-rich inner layer
or chemical-resistant layer
or thermoplastic inner layer