http://www.oawellscreen.com/Customized Stainless Steel ERW Pipe Our History Oasis Oil Tools Co., Ltd, always adhere to the “development on innovation, development on efficiency and treat customers with honesty” business philosophy. After many years’ efforts, now oasis has developed into a famous manufacturer which integrates the research and development, design, manufacture and sell water well screens/johnson screens, oil well screens and sand control well screens, bridge slotted well screens, pipe based well screens, perforated pipe (base pipe), gravel pre-packed well screens, wedge wire screens, passive water intake screens etc. w