Seamless steel tubes for heat exchange include seamless steel tubes for low and medium pressure boilers (GB3087-1999), representative materials for No. 10 and No. 20 steels, and seamless steel tubes for high pressure boilers (GB5310-1995), representing a material of 20G. 12Cr1MoVG, 15CrMoG and so on. This type of pipe exchanges heat through the pipe wall, including boiler pipes and heat exchanger pipes. The information comes from Shandong Seamless Steel Tube Factory.