Abstract
We report on test result of strength of our FRP pipes made with centrifugal force winding process. The pipes are non-upset and meet the requirement of tentative GPI (Global oil and gas Pipe Institute) standard which covers more than 25 MPa inner pressure range of API standard. 3-1 2 M grade (general standard grade) pipes are used for the test because it can be applied for injection and pumping of water in the oil wells. The test items of pipes are inner, external pressure, and tensile strength. The items of joint screw are shearing stress, inner pressure, and tensile strength. The proper screwing torque and sealing chemical are also tested. NBL standard are applied in the test, which has its base on ASTM (American Society for Testing and Materials) standard and becomes base of GPI standard.
