X80钢级DN1200低温三通

DN1200 Low-temperature Tee of X80 Steel Grade

高钢级、大口径和极端环境下服役的管道是国际石油天然气管线的前沿技术。中俄东线天然气管道工程国内段的设计温度为-45℃,与之配套的压力管道元件的研究迫在眉睫。通过分析热挤压三通的设计、选材、制造工艺,总结出了高钢级、大口径、低温热挤压三通的结构设计、原材料成分、热成型及热处理控制等方面关键技术,为中俄东线X80钢级低温管道提供了合格配套产品。

Pipeline of high steel grade,large diameter and service under the extreme environment is the international frontier technology ofoil and gas pipeline.The designed temperature is-45℃ for the domestic segment of the eastern Chinese-Russian natural gas pipelineproject.Therefore,the research on pressure piping components for the project is of great urgency.This paper analyzes design,materials andmanufacturing process of thermo-extruded tee and summarizes the key technologies of high steel graded,large-diameter and low-temperature thermo-extruded tee,such as structural design,raw material composition,thermoforming and heat treatment control,aiming toprovide the related qualified products for the eastern Chinese-Russian low-temperature pipeline of X80 steel grade.