Prefabrication and different diameters and structure pipes assembly, hydrostatic testing, painting, handrails assembly, workshop engineering and separation batteries. Manufacturing and installation of pipelines and raw storage tanks’ structure. Manufacturing, installation, hydrostatic testing, and radiographic inspections. Pipeline for gas, air and water systems. Pipeline for congenital water, fire fighting and gas systems. Water, oil, dehydrated water, and venting structure system. Manufacturing, installation…