俄罗斯辛那尔钢管厂实施五年改造计划俄罗斯辛那尔钢管厂为了提高其主产品——石油油管、套管和钻杆的产量和质量，制定了一项为期五年的改造计划并于去年开始实施，该计划用于改造的投资每年将不少于2000万美元。今年辛那尔钢管厂对Φ140mm自动轧管机组进行了大修，更换了环形 Five-Year Retrofit Plan at Sinnar Steel Plant in Russia The Sinnor Steel Plant in Russia has developed a five-year retrofit plan to increase the production and quality of its main products, oil hoses, casing and drill pipes, last year Beginning of the implementation, the plan for the transformation of the investment will be no less than 20 million US dollars each year. This year Sinnar Pipe Mill on Φ140mm automatic pipe rolling unit overhaul, replacing the ring