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| Hebei Yanshan Tianyuan Steel Pipes Factory |
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| our factory is provided with 2 production lines of double-side submerged arc welding spiral pipes with the specification (Φ219-1820) following the GB/T9711 standard, and the annual yield is 50,000 tons. In addition, there are 2 production lines of hot-rolled steel pipes for the product API GBB163, GBB162 with the specification (Φ159-Φ630), and the annual yield is about 40,000 tons. Also, there are two production lines of empty hole cold-drawing units with the specification (Φ25-Φ159), following GBB162-1999, GBB163-1999 and GB3087-1999 standards, and the annual yield is about 20,000 tons. |
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