orange sewer pipes close corrugated pipe double layer

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Orange sewer pipes, close-up. Corrugated sewer pipe, double-layer Royalty Free Stock Photo

Corrugated sewer pipe, double-layer. Pipes stacked together Royalty Free Stock Photo

Orange sewer pipes, close-up. Corrugated sewer pipe, double-layer

Corrugated sewer pipe, double-layer. Orange sewer pipes, close-up Royalty Free Stock Photo

Corrugated sewer pipe, double-layer. Pipes stacked together, repair work in the city. Orange sewer pipes, close-up. Pipes are able to withstand variable loads from the soil