本文研究了短芯棒拔制不同模具对钢管壁厚不均的影响。研究表明,锥形外模一柱形芯棒拨制的钢管,壁厚不均最大,弧形外模一锥形芯棒拔制的钢管次之,混合模具拨制的钢管壁厚不均最小。管头管尾壁厚不均的值差又以锥形外模-锥形芯棒拔制为最佳。 In this paper, the effect of short mandrel drawn different mold on the uneven thickness of steel pipe wall. The results show that the conical outer mold with a cylindrical mandrel dial steel pipe, the largest uneven wall thickness, curved outer mandrel taper mandrel drawn steel followed by mixed mold dial steel pipe wall thickness is minimal . The difference of the thickness of the tail of the pipe end wall is uneven, and the tapered outer mandrel - the best taper mandrel.