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LL-50冷连轧管机已通过国家鉴定。冷连轧管机的研制成功,为冷连甜管材的生产开创了一个新的途径,提供了一项新技术、新轧机,是冷轧管机的一个发展方向。冷连轧管机采用多机架连轧原理,完全摆脱了现有冷轧管机机头往复运动和管坯芯棒间
LL-50 cold rolling mill has passed the national appraisal. The successful development of cold rolling mill has opened a new avenue for the production of cold continuous sweet pipe and provided a new technology and new rolling mill which is a developing direction of cold rolling mill. Cold rolling mill with multi-rack tandem rolling principle, completely out of the existing cold-rolled tube head reciprocating motion and the tube between the mandrel