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Liaoning Steel Tube Co., Ltd. with totally 750,000 square meters of land covering and 160,000 square meters of building area is one of the domestic backbone enterprises for the modernized pipe production with total assets of RMB 500 million. It has two automatic spiral seam SAW pipe manufacturing line and a large diameter longitudinal UOE welded pipe manufacturing line which result in the annual output is 1,000,000 tons as diameter specifications from 219 to 2520mm and wall thickness from 6 to 32mm, steel g...
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