Steel-Lined PTFE Tube Is The Use Of High-Quality PTFE, The Use Of Special Processing Technology, So That Steel And Plastic Pipe In Close Contact. Steel-Lined Teflon Composite Pipe Can Withstand Positive Pressure 1.6mpa, Negative Pressure 70kpa, Medium Temperature -100°C ~ +250°C, Almost All Chemical Media, Including The Corrosion Of Concentrated Nitric Acid And Aqua Regia, And Long-Term At 230°C ~ 250°C Temperature Work.