Q345E seamless steel pipe of the main characteristics: good mechanical properties, weldability, cold, hot workability and corrosion resistance are good, has good low temperature toughness Q345E seamless steel pipe products Application: shipbuilding, boilers, pressure vessels, oil storage tanks, The Q345E seamless steel pipe bridges, power station equipment, lifting and transport machinery and other high load welding structural parts old standard controls: 18Nb Nb-killed steel, performance with 14MnNb of, similar, mainly used cranes, blowers, chemical machinery, etc. 09MnCuPTi resistance to atmospheric corrosion steel, low temperature impact toughness, weldability, hot and cold, good processing properties are mainly used in wet and humid areas and corrosive atmosphere environment mechanical