薄壁管

                          合金狀態(tài)：2A12 T4  

                   規(guī)格：Φ100﹢0.2*壁厚2.5±0.1 *3750mm

            技術(shù)要求：

                                          1）直線度：≤0.8mm/m

                                           2）圓度：≤0.2mm

                                           3）內(nèi)外表面粗糙度：≤Ra0.8

                   其余按GB/T6893-2010執(zhí)行