PVC-U Double wall corrugated pipe

U-PVC Double wall corrugated pipe is a special pipe with smooth inner wall, outer wall texture and hollow between inner and outer wall. The pipe is beautiful in appearance, strong in pressure resistance, small in water resistance, and resistance to acid and alkali corrosion. Easy to install and transport, with significant advantages of energy saving and water saving. Standard GB/T18477-2001. Application: municipal engineering, construction engineering, electrical and telecommunication engineering, railway and highway communication