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由青海省西宁钢厂与山东省临朐县五金一厂联合新建的临朐县宁朐无缝钢管厂于1992年9月28日通过了初步设计审查。该项目由包头钢铁设计研究院设计。计划总投资为5585万元。一期工程由热轧与冷拔、冷轧组成。设计年产φ8～89mm×1～6mm冷轧(拔)不锈钢管1000t,φ30～85mm×2.5～6mm冷拔碳素钢管1500t。一期工程计划于1994年下半年完成
The preliminary design review was passed on September 28, 1992, by the newly established Linqu County Ninglang Seamless Steel Tube Plant jointly established by Qinghai Xining Steel Plant and Linli County Hardware Factory of Shandong Province. The project is designed by Baotou Steel Design and Research Institute. The total planned investment is 55.85 million yuan. A project by the hot-rolled and cold drawn, cold-rolled composition. Design annual output of φ8 ~ 89mm × 1 ~ 6mm cold-rolled (unplugged) stainless steel tube 1000t, φ30 ~ 85mm × 2.5 ~ 6mm cold drawn carbon steel 1500t. The first phase of the project is scheduled to be completed in the second half of 1994