Construction Of 4''X 50 Psig & 2'' X 50 Psig Rehabilitation Dn/Distribution Line Instead Of Leakaged Existing 4''X 50 Psig & 2'' X 50 Psig Gas Line At Khan Bahadur Awlad Hossain College, Shibbari, Manikgang Sadar, Manikgang Under Company Finance.