PipeA long tube of clay, concrete, steel, metal, wood, etc., for conveying water, gas, oil or other materials. made from coils of steel plate by wrapping around a mandrail in such a manner that the welds are a spiral helix.
PipeA long tube of clay, concrete, steel, metal, wood, etc., for conveying water, gas, oil or other materials. made from coils of steel plate by wrapping around a mandrail in such a manner that the welds are a spiral helix.