Austenitic stainless steel oil pipe for acidic corrosion oil-gas well and processing method thereof

The invention relates to the technical field of petroleum and natural gas pipes, in particular to an austenitic stainless steel oil pipe for an acid corrosion oil-gas well and a machining method. The invention relates to an austenitic stainless steel oil pipe for an acidic corrosion oil-gas well. The austenitic stainless steel oil pipe comprises the following chemical element components in percentage by weight: less than or equal to 0.03% of C, 0.15%-0.3% of Si, less than or equal to 0.010% of P, less than or equal to 0.005% of S, 20.0%-24.0% of Cr, 14.0%-20% of Mn, 5.0%-10.0% of Ni, 3.0%-5.0% of Mo, 0.25%-0.50% of Cu, 0.4%-0.6% of N, less than or equal to 0.1% of V, less than or equal to 0.1% of Nb, 0.001%-0.003% of Ca, 0.01%-0.03% of Re and the balance of Fe and inevitable impurities. The oil pipe meets the mechanical property requirement of a 110 ksi steel-grade oil pipe, the yield strength is 760-880 MPa, the tensile strength is 900-1050 MPa, the ductility is larger than or equal to 40%, the full-size tra