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 Specification                                                                                                                                     1.  Flatness tolerance: 0.05+0.05/1000.Lmm 2.  Parallelism tolerance: 0.05+0.05/1000.Lmm 3.  Surface roughness: 1.6 4.  Surface temperature tolerance: 3℃  5.  No leakage at welding position when hydraulic pressure is up to 25kg/cm2 6.  Largest size: 3*13m 7.  Material: Q235,Q345,45#,35# http://www.chinaenorkpress.com