Tubes and pipes usually have DOll uniform mechanical properties and dimensional irregularity generated by unsuitable manufacture processes and inappropriate fabrication treatments. Those nonuniformity and irregularity gives serious influences and damages Oil strength，secondary formability and other required functions of tubes and product made of them. In this paper nonuniformity and irregularity of tubes are investigated and their influences are discussed. In addition effective methods to amend such on uniformity and irregularity are proposed.