recently，A domestic pipeline enterprise has successfully broken through the production technology of low-temperature environment coiled pipes，Solved the problem of traditional hot coil tubes-40℃Easily brittle at low temperatures、Industry pain points of insufficient weld strength。This technology optimizes the material ratio of steel plates through optimization（Add nickel、Chromium alloy element），Improve the temperature control of hot coils（Accurate control in850-950℃），And adopt double wire submerged arc welding process，Improve the low-temperature impact toughness of coiled tubes35%，The qualification rate of weld seams has reached100%。The upgraded coiled tubing can be widely used for oil and gas transportation in northern high-altitude regions、Polar Engineering Construction，Breaking the situation where low-temperature coils rely on imports，Further promote the localization process of rolling tube technology in China。