... high temperature resistant, low temperature resistant and corrosion resisting of boiler industry High Pressure Boiler Steel Tube 20G,A106,ST45 ... for manufacturing, heating-pipeliners, containers,steaming pipelines of low/medium pressure boiler. Liquid Steel Tube 20,Q345 GB/T8163-1999 8 ... 630*1.0-40Seamless steel tube used for the transportation of liquid Structural Steel Tube 10,20,35,4516Mn,Q345B GB/ ...