Abstract: The drawing process of the 2205 duplex stainless steel welded pipe is studied,involving the activities as follows. The cold-drawing testing is conducted with the one pass,two reduction process for the purpose of inspecting and analyzing the mechanical properties,the geometric dimensions,the microstructure and the hardness of the as cold-drawn pipe. The testing result shows that under the one pass and 11.9% reduction drawing conditions,the Φ88.9 mm×4 mm 2205 duplex stainless steel welded mother pipe can be cold-drawn into the Φ78 mm pipe with good surface quality,and geometric dimensions and mechanical properties as up to applicable specification,which means that the said cold-drawing process is feasible,and applicable to the massive production of the 2205 duplex stainless steel cold-drawn pipe with the welded mother tube.