本发明一种海洋用钛合金小口径无缝管的短流程制造方法，属于钛合金管材加工技术领域；制造方法包括：涂覆涂层→加热→斜轧穿孔→在线热矫→表面修磨→冷轧→中间退火→表面修磨→冷轧(循环轧制结合中间退火至成品管尺寸)→成品管材热处理。最后1道次冷轧管经热处理后，其屈服强度不低于850MPa，抗拉强度不低于950MPa，延伸率不低于10％，冲击功不低于40J。斜轧穿孔+冷轧的工艺组合，不仅可以生产出组织均匀、力学性能优异的钛合金无缝管材，而且设备投资少，工艺流程短，适合多规格、中小批量海洋用钛合金无缝管的生产。

 The invention discloses a short-flow manufacturing method of small-caliber titanium alloy seamless pipes for oceans, and belongs to the technical field of titanium alloy pipe machining. The manufacturing method comprises the steps of coating of coating layers-heating-inclined rolling and perforation-online hot correction-surface finishing-cold rolling-intermediate annealing-surface finishing-coldrolling (combination of circular rolling with intermediate annealing to reach sizes of finished pipes)-heat treatment of the finished pipes. After heat treatment of cold-rolled pipes in the last pass,the yield strength is not lower than 850 MPa, the tensile strength is not lower than 950 MPa, the ductility is not lower than 10%, and the impact power is not lower than 40 J. Through the inclined rolling and perforation+cold rolling process combination, the manufacturing method not only can prepare the titanium alloy seamless pipes with uniform structures and excellent mechanical performances, but also achieves low equipment investment and short process flow, and is suitable for preparation of medium/small-batch titanium alloy seamless pipes for the oceans with multiple specifications.