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Primetals Technologies Receives Acceptance for Push-Pull Pickling Line
10/16/2025 - HBIS Tangsteel has given Primetals Technologies the provisional acceptance certificate for the world’s largest push-pull pickling line at its steel plant in Laoting, China.
The companies said the new line processes strip thicknesses from 1.8 to 15 mm at speeds up to 200 m/minute. Primetals Technologies supplied the complete mechanical, electrical and automation scope in addition to engineering and advisory services.
Targeted process optimization and state-of-the-art control technology ensure more consistent strip tension control, reduced offsets between layers and improved edge guidance. This results in higher surface quality, fewer rejects and more options for further coil processing, the company said.
The machine is supported by an innovative solution for automated analysis and control of the pickling process; operators have a comprehensive overview and can manage the process with precision.
The level 2 automation solution has a pickling software model which considers multiple parameters to ensure optimal temperature, pickling levels, flows and turbulence. This allows for increased throughput, optimized energy use and reduced pickling fluid consumption.
Primetals Technologies said the line also has an in-line 4-high single-stand skinpass mill for enhanced strip flatness control and a turret-head-type sidetrimmer for thicknesses from 2 to 8 mm for top strip-edge quality.
Targeted process optimization and state-of-the-art control technology ensure more consistent strip tension control, reduced offsets between layers and improved edge guidance. This results in higher surface quality, fewer rejects and more options for further coil processing, the company said.
The machine is supported by an innovative solution for automated analysis and control of the pickling process; operators have a comprehensive overview and can manage the process with precision.
The level 2 automation solution has a pickling software model which considers multiple parameters to ensure optimal temperature, pickling levels, flows and turbulence. This allows for increased throughput, optimized energy use and reduced pickling fluid consumption.
Primetals Technologies said the line also has an in-line 4-high single-stand skinpass mill for enhanced strip flatness control and a turret-head-type sidetrimmer for thicknesses from 2 to 8 mm for top strip-edge quality.
