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关 键 词：Spiral
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发布时间：2011-04-25
The company's leading products for "Tianyuan" brand φ219-φ3200mm, wall thickness 6-20mm, steel grade for the B-X70 spiral seam double submerged arc welded pipe, "Tianyuan" brand φ89-φ820mm, wall thickness of 4-12.7mm Longitudinal and 30-2000mm flange. Product implementation API Spec 5L, API Spec 5CT, API Spec 5B, EN10217, SY/T5037-2000, GB/T9711.1, GB/T9711.2, GB/T3091-2008 standards.
