我国连轧管机组的发展历程及分布状况  

Development History and Distribution of Domestic Mandrel Pipe Mill Lines

作　　者：张旦天[1] 高瑞全[2] 孙世忠[2] 钟锡弟 

机构地区：[1]渤海钢铁集团有限公司,天津300202 [2]天津钢管集团股份有限公司,天津300301 [3]中国钢结构协会钢管分会,天津300301

出　　处：《钢管》2015年第2期6-10,共5页Steel Pipe

摘　　要：介绍了我国连轧管机组从二辊全浮动芯棒连轧到三辊限动芯棒连轧的机组发展历程,以及各类机组的轧制工艺特点,并对我国现有连轧管机组的数量、产能、规格组成及地区分布等进行了详细介绍。认为:我国连轧管机组发展迅速,已成为生产无缝钢管的主力机型;从目前市场需求来看,各地区对Ф180 mm以下小直径热轧无缝钢管的需求较旺盛,而Ф460 mm以上大直径热轧无缝钢管的需求偏弱;连轧管机组地区分布不均衡,在市场需求偏弱的压力下,产能同时出现过剩趋势,同质化竞争惨烈;企业需找准自身定位,努力提高自身发展质量和效益。Described in the paper is the development history of the domestic mandrel pipe mills as from the early 2-roll full-floating mandrel mill to the 3-roll retained mandrel mill. Also detailed are the rolling process characteristics of different mandrel mill plants, and the main aspects of currently-used domestic mandrel mill lines, including quantity, capacities, product mixes and regional distribution, etc. It is regarded by the co-authors that development of domestic mandrel pipe mills is so fast that such type of pipe mill has been the leading one for production of seamless steel tube and pipes. As for the demand for seamless steel tubes from the domestic market, need for small-sized hot-rolled pipes with diameters under Φ180 mm is rather flourishing, whereas that for large-sized hot-rolled tubes with diameters over Φ460 mm is rather weak. Moreover, the regional distribution of the mandrel mill line is unbalanced, while surplus trend of capacities is developing, and the homogeneity competitions are so fierce, due to the hard market situation with poor demand. Finally, it is concluded that companies concerned have to try to identify their own niches to make efforts for improving development quality and profitability.

关 键 词：中国 连轧管机组 发展历程 无缝钢管 规格组成 产能 地区分布 

分 类 号：TG333.8[金属学及工艺—金属压力加工] T-1[一般工业技术]