reach 50 ~ 60%, and the section shrinkage rate can reach 70 ~ 80%. The specific strength (strength to weight ratio) of industrial pure titanium tubes is very high in metal structural materials, and its strength is equivalent to steel, but its weight is only 57% of steel. The heat resistance of titanium tube is very strong, and it can still maintain good strength and stability in the atmosphere of 500 ° C. Titanium pipe also has good low temperature resistance, even at -250℃ ultra-low temperature, it still has a high impact strength, can withstand high pressure and vibration. Strong corrosion resistance.