The investigation of hardness and density properties of GFRP composite pipes under seawater conditions

Glass fiber reinforced polymer (GFRP) composite pipes are mostly used in transmission lines of submarine oil, natural gas, and chemical fluids. The alterations mechanical characteristics applications great importance to the lifespan material. Some important properties materials density hardness value. In this study, changes values GFRP which were unexposed seawater exposed for 1, 2 3 months investigated. As a result present it was deduced that sample changed with effect seawater.