... , easy installationFine tightness connected with steel pipeNo electrical conductivity, smooth internal surface and low friction coefficient improve the ... pipe (single-well, service main, main line, transport)On-site process pipe (the gathering stations, union station, ... pipelineTertiary recovery injection (polymer, CO2, NaOH and so on) pipelineOil field fire-extinguishing system pipelineOil field tubing ...