§ 54.39 PIPES USED IN ALTERATIONS.
   All pipes and fittings used in making alterations, additions or repairs shall be of the same quality as herein required for new work of the same character, provided that such pipe and fittings need not be new if sound and of the required quality, and all such repairs, alterations and additions shall be inspected and certificate of approval issued therefor by the Gas Inspector.
(`85 Code, § 20-67)