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The Company, with abundant experience in manufacturing seamless steel pipes and tubes for more than 50 years, has 2 advanced hot-rolling production lines which are mainly composed of one rotary heating furnace (diameter 16 m), two s of piercers (Φ140 &Φ114) and all of corresponding accessories. About 250,000 metric tons of carbon steel or low alloy steel pipes and tubes made by these two production lines are 76 mm to 219 mm in O.D., 4 mm to 50 mm in W.T. and 13 meters long (Max.).