RIFENG offers a complete line of PVC rigid conduit and fittings which are made of high-quality raw materials. For commercial, residential, and industrial applications, RIFENG PVC rigid conduit has been proven to be durable and effective for years of maintenance-free performance underground.

Technical specification

Corrosion Resistant
Resistant to most chemicals, PVC is typically not affected by corrosive soils.And the conduit can be buried in concrete.
Good insulation, able to resist AC2000V voltage and insulation resistance more than 1x10 Ω.
Properties make PVC fire resistant.
Impact Resistant
Tough, durable, with high tensile strength, yet easy to install and can be bent by spring under normal temperature.
Attracting appearance
Even color, good appearance, suitable for indoor installation.


RIFENG PVC Conduit pipes in accordance with standard IEC-61386.

Nominal size   16x1.3 20x1.5 25x1.6 32x1.8
Outside diameter mm 16 20 25 32
Tolerance of outer diameter (mm) Min 15.75 19.75 24.75 24.95
Max 15.95 19.95 31.75 31.95
Wall thickness mm 1.3 1.5 1.6 1.8
Wall thickness uniformity    -2.06≤△A≤+0.26
Tolerance of wall thickness (mm) Min 1.2 1.4 1.55 1.7
Max 1.4 1.55 1.75 1.9
Exterior Conduit shall be smooth and free of cracks, ridges or burrs.
 Do not damage the wires during installation.
Storage temperature Not less than -5°C/23°F
Installation temperature Not less than -5°C/23°F
Long-term working temp.  -5°C/23°F ~ 60°C/140°F
Flame retardant performance Self-extinguishes in less than 30 seconds after ignition
Oxygen index ≧32%
Insulation performance No breakdown in AC2000V 50 Hz within 15 minutes.
 Insulation resistance≥100MΩ
Compression resistance Load 1min, ≤25%
Unloading 1min, ≤10%