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以无锡西姆莱斯钢管有限公司的Φ100mmAssel轧管机组为研究对象，对厚、中、薄壁不同规格钢管各工序的壁厚、壁厚相对偏差和壁厚绝对偏差的分布形态及演变过程进行了分析。研究表明：各工序钢管的空厚、壁尽相对价差和壁厚绝对值差的分布均具有偏心螺旋形特征；在穿孔、Assel轧管、张力减径各工序中，Assel轧管是影响成品管壁厚精度的关键工序；不同D／S的荒管，其壁厚偏差绝对值在数量级上基本相同；降低壁厚偏差的绝对值是提高钢管壁厚精度的主要途径。
With Φ100mmAssel pipe mill of Wuxi Simmons Steel Pipe Co., Ltd. as the research object, the distribution and evolution of wall thickness, relative deviation of wall thickness and absolute deviation of wall thickness in various processes of thick, medium and thin- Analysis. The results show that the distribution of hollow thickness, relative wall thickness and absolute difference of wall thickness have eccentric spiral characteristics in each process. In Assel tube rolling and tension reducing process, Wall thickness accuracy of the key processes; shortage of D / S shortage of pipe, the absolute value of the thickness deviation is basically the same order of magnitude; to reduce the absolute value of the wall thickness deviation is to improve the accuracy of the main pipe wall thickness.