The difference between HDPE double-wall corrugated pipe and PVC double-wall corrugated pipe
The difference between HDPE double-wall corrugated pipe and PVC double-wall corrugated pipe 1. UPVC double-wall corrugated pipe UPVC double-wall corrugated pipe, also known as PVC-U double-wall corrugated pipe, is a special pipe made of polyvinyl chloride as the main raw material, with smooth inner wall, corrugated outer wall and hollow inner and outer walls. The pipe has beautiful appea