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DIN 2395 Rectangular and square welded precision steel tube or hollow sections, US $ 680 - 965 / Ton, ASTM, bs, DIN, GB, JIS, ASTM A53-2007, ASTM A53M-2007, BS 1139, BS 6323, BS EN10219, DIN 1626, DIN EN 10216-1-2004, GB 9948-2006, GB/T 3094-2000, JIS G3466, 10#-45#, A53-A369, Q195-Q345, 10#, 20#, A