Biaxially Oriented PVC Pipe (PVC-O) Production Process

The biaxially oriented PVC pipe (PVC-O) is a pipe made by a biaxial orientation process. During the production process, the PVC-U pipe is heated and stretched in both the circumferential and axial directions, so that the molecular chains are highly oriented and arranged to form a layered structure, thereby significantly improving the material performance.

Biaxially Oriented PVC Pipe (PVC-O) Production Process

Advantages of PVC-O Pipes:

1. High strength: The compressive strength is more than twice that of PVC-U, and it can withstand higher pressures (e.g. 16-25 bar).

2. Lightweight: Under the same pressure, the wall thickness is reduced by 30%-50%, the weight is lighter, and the transportation and installation costs are reduced.

3. Fatigue resistance: PVC-O pipe is not easy to crack under repeated pressure fluctuations, and the service life is more than 50 years.

4. Good toughness: The low-temperature impact resistance is better than PVC-U (it still maintains toughness below -10°C).

PVC-O Pipes vs PVC-U Pipe vs PVC Pipe:

PVC-O Pipe PVC-U Pipe PVC Pipe
Molecular structure Biaxial orientation, layered arrangement Random amorphous, hard Plasticizer dispersion, soft
Tensile strength ≥50 MPa 40-45 MPa ≤20 MPa
Low temperature toughness -20℃ still maintains toughness ≤5℃ easy to crack Easy to harden at low temperature
Wall thickness/weight Thin wall (30%-50% thinner than PVC-U) Standard wall thickness Thick wall (need to increase thickness due to low strength)
Cost Higher (complex process) Economic (widely used) Low (but short life)
Applicable industries High-pressure water supply, gas, mining Building water supply and drainage, sewage pipe Wire casing, temporary drainage pipe

About PVC-O Pipe Extrusion Line:

Biaxially Oriented PVC Pipe (PVC-O) Production Process

PVC-O pipe extrusion line produced by our company can realize the continuous production of PVC-O pipes. The main equipment includes: raw material pretreatment system (high-speed mixer), twin-screw extruder, vacuum tank, spray cooling water tank, haul-off machine, cutting machine etc.

Biaxially Oriented PVC Pipe (PVC-O) Production Process

PVC-O Pipes Application:

Biaxially Oriented PVC Pipe Application

Why choose Kangju Machinery?

Planning a plant is complex, but partnering with Kangju Machinery simplifies the transition from blueprint to production. With over 15 years of specialized experience in plastic extrusion line, Kangju does not just supply machines; we deliver “Turn-key Intelligence”.

  • 15+ Years of Technical Mastery: Proven expertise in pipe / profile / panel / sheet extrusion.
  • Customized Molds: Our in-house mold design team uses flow-simulation software. This ensures your PVC wall panels have uniform thickness and a flawless finish from the first meter.
  • On-Site Commissioning: We provide global on-site installation and technician training, ensuring your local team is fully capable of maintaining peak production efficiency.

Kangju Machinery

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