Providing services of API quality Welding, Fabrication, fitting, modification jobs of hydrocarbon pipeline, repair of pilferage point, assistance for hydro testing of valves & other pipe fittings including welding jobs on over ground sections of pipelines suspended on bridges/independent suspension across rivers for the period of 3 years on as and when required basis from PL Km 632 to PL KM 920 (West Bengal Sector)