With an annual output of 10 million tons, gnee is the largest domestic manufacturer of ERW square pipes, rectangular pipes, hollow pipes, galvanized pipes and spiral welded pipes. Annual sales reach US$5 billion. It has 59 black straight seam welded pipe production lines, 10 galvanized pipe production lines, 3 spiral welded pipe production lines, and 1 JCOE LSAW steel pipe production line.
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