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HULUDAO CITY STEEL PIPE INDUSTRIAL CO., LTD is specialized enterprise manufacturing high frequency longitudinal seam welding steel pipes,mainly used for transportation of water,gas, petroleum and also used for structure pipe, scaffold , casing and tubing. the company has 15 sets of longitudinal seam welding mills and diameter from Ф 21.3 (1/2 ") to Ф609.6 (24 "), double-sided spiral submerged arc welded steel pipe with diameter fromФ 219 ~Ф2540 and the various size rectangles tube,it is a large scale welded pipe production enterprise with annual production capacity 700000 tons.
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