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API, ASTM, bs, DIN, GB, JIS, ASTM A53, ASTM Stainless Steel Pipe Feature: Material: 45#, Q235, Q345, Q195, ST37, ST52, ST42, 10#-45#, Q195-Q345, ST35-ST52 Standard: API, ASTM, bs, DIN, GB, JIS, ASTM ...