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![]() Our business scope includes the manufacture, sale and technology development for steel pipes used as tubing, casing, drill pipes and couplings in petroleum and natural gas industries, and also the development and service of high-tech steel pipes used in petroleum and natural gas industries. The annual production capability of Hongling is 500,000 tons of OCTG and 3 million pieces of couplings. Production size is from dia. 48.3mm to dia. 339.7mm. Our company can... [Details] |
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