西重2A12 T4 薄壁管

                   薄壁管

                          合金状态：2A12 T4  

                   规格：Φ100﹢0.2*壁厚2.5±0.1 *3750mm

            技术要求：

                                          1）直线度：≤0.8mm/m

                                           2）圆度：≤0.2mm

                                           3）内外表面粗糙度：≤Ra0.8

                   其余按GB/T6893-2010执行