本文针对焊接H 型钢自动生产线进行了研究。根据该生产线自动化程度高、工艺精度高的特点，着重介绍了PLC 控制与无纸化生产。通过这些技术手段，大幅度提高了产效率。该生产线已经成功应用于实际生产。关键词：钢结构；焊接 H 型钢；PLC 控制；无纸化生产Abstract：The investigation of this paper is aimed at H-beam automatic welding line. Aimed at the characteristics of high automatic and high quantity. We introduce programming logical contoller and paperless production through which efficiency is increased. The line has used in practice produced successfully.Keywords: Steel structure； Welding H-beam； PLC； Paperless production