supply of sitc of exhaust piping of following sizes ms b class exhaust pipes conforming to is3589 with welding joint including bends clamps dash fastener flanges nuts bolts etc complete as required and as per specifications detailed below 6 to 8 dia 200 mm nb ms 485mm thick exhaust pipe sitc of exhaust piping of following sizes ms b class exhaust pipes conforming to is3589 with welding joint including bends clamps dash fastener flanges nuts bolts etc complete as required and as per specification