ZLm-100 and ZLm-160 welding machines are intended primarily for the linear welding of sheet metal and objects made of low-carbon steel and certain grades of alloy steels. They also allow spot welding of details. The ZLm-100 welder allows welding both longitudinal and transverse. The ZLm-160 device allows to weld only transversely, but with high efficiency, the details with a relatively large thickness of 2 + 2 mm. In our ZLm-100 and ZLm-160 welders, modern microprocessor control systems have been used that allow for the exact selection of bonding parameters. As a result, the resulting welds have very high quality and durability. The autodiagnostics systems and protections that these welding machines are equipped with ensure their high reliability and work safety.