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Ductile iron pipe (D.I.Pipe) used for portable water line,
Pipe
wrap is resin-impregnated fiberglass or PVC tape used for surface protection. ... It repairs pipe leaks and protects moisture ingression, corrosion, and abrasion. It is actually a polymer tape that adheres to fiberglass, concrete and all kinds of pipes, joints and elbows.
Here we are using bitumen tape.
Bitutape is a high performance anti-corrosive pipe wrapping tape designed for use on buried pipeline, pipe joints, fittings and tie bars where impact or stress is high.
Overlap as per specification 50 to 55%.