Double-wall plastic corrugated pipe
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Double-wall plastic corrugated pipe
Double-wall corrugated pipe: it is a new type of pipe with annular outer wall and smooth inner wall. It is mainly used for large-scale water delivery, water supply, drainage, sewage discharge, exhaust, subway ventilation, mine ventilation, farmland irrigation and so on with working pressure below 0.6MPa. The inner wall color of double-wall bellows is usually blue and black, and some brands will use yellow.
