包头钢铁公司连轧钢管厂主要轧制Φ180ｍｍ规格无缝钢管 ,无缝钢管热轧机组采用了世界上先进的限动芯棒连轧管生产工艺 ,穿孔机、连轧管机等主体设备从意大利茵茜公司引进。机组在定径机和张减机前设置一座步进梁式再加热炉 ,步进梁按矩形轨迹上下前后运动 ,使钢管一步步前进 , Baotou Iron and Steel Company Continuous Rolling Mill main rolling Φ180mm specifications seamless steel pipe, seamless steel hot-rolled unit using the world’s most advanced limited mandrel rolling production process, piercing machine, rolling machine and other main equipment from Italy Yin Qian company introduced. Set in the sizing machine and Zhang Minji before a walking beam reheating furnace, walking beam by the rectangular trajectory up and down before and after the movement so that the pipe step by step forward,