Global Process and Pipeline Services Limited (GPPS) offer quality services and a number of innovative new technologies, that will span over the under listed Services: Pipeline Cleaning, Commissioning, Decommissioning and Pumping Services Nitrogen Services and Chemical Cleaning Integrated Hook-up, Pre-commissioning and Start up of oil and gas facilities (HUC). Project Management and Support Services . Maintenance and Support Services. We have the ability to support projects with well trained and motivated personnel, fully equipped infrastructural resources and all necessary technical support and combined with indigenous expertise and knowledge that will guarantee quality and early project completion.