Abstract: Described in the article are the effect by the cold -drawing process of ASME SA-213 T2 St. internal spinned pipe on geometry of the pipe and the effects by different heat treatment procedures on creep rupture strength of the pipe. Result of relevant experiment shows that the cold-drawing W.T. reduction amount VS height of the internal thread is directly proportional, while the creep rupture strength of T2 steel remains almost the same in spite of whatever heat treatment procedure is used.