Bid Document For Providing, Supplying, Lowering, Laying, Jointing Rcc Np4 Pipes For Sewer Collecting System With Road Restoration, & Cleaning Equipments With Allied Works With 2 Years O & M For Bhavnagar Under Ground Drainage Scheme For Gopal Nagar & Hadanagar, Taluka-Bhavanagar, District-Bhavnagar.