features:
1.anti-corrosion
2.light weight, easy to install
3.low maintenance cost
4.long life
5.smooth internal face
6.fine tightness with steel pipe
product specification:
diameter:DN40-800mm
pressure rating:PN1.0-25Mpa
joint type: thread connection and socket&spigot connection
standard: API 15HR 15LR  ASTM
production process: filament wound