The present invention relates to a special-shaped seamless steel
pipe rolling manufacturing method, which directly uses cold rolling to manufacture a special-shaped seamless steel
pipe, and specifically comprises:
raw material preparing, roller type straightening, flaw detection, cold rolling pretreatment, cold rolling, heat treatment, straightening, marking and warehousing, wherein hot rolling isfirstly performed to obtain a special-shaped seamless steel
pipe billet material for cold rolling at a
room temperature, and the special-shaped seamless steel pipe is manufactured by using cold rolling, wherein the process steps specifically comprise
raw material preparing, heating, hot rolling, annealing, roller type straightening, flaw detection, cold rolling pretreatment, cold rolling, heat treatment, straightening, marking and warehousing. According to the present invention, with the special-shaped seamless steel pipe rolling manufacturing method, the manufacture of the special-shaped seamless steel pipe is not limited by the
raw material; the hot rolling and the cold rolling are combined by using the rolling tool and the core rod die or the cold rolling is separately performed, suchthat the advantages of easy performing and high yield are provided; and the flexible combination installation can be performed according to the requirement, and the installation precision can be controlled.