Boiler tubes are seamless tubes manufactured and are made of either carbon steel or alloy steel. They are widely used in steam boilers, for power generation, in fossil fuel plants, industrial processing plants, electric power plants, etc. Boiler tubes can either be medium-pressure boiler pipe or high-pressure boiler pipe.

Heat exchanger tube is a device which is used to transfer heat from one medium to another for both cooling and heating processes. It separates the medium which is being used. Heat is transferred through these exchanger tubes by the conduction process. Mediums can be liquid, vapor, or gas. For example, an air-cooled heat exchanger uses air to cool a liquid and a shell & tube heat exchanger is for passing fluids.

GB: Chinese National standards
GB 3087: Seamless steel tubes for low and medium pressure boiler
GB 5310: Seamless steel tube for high pressure boiler
GB 13296: Seamless steel tubes for boilers and heat exchangers
GB 6479: Seamless steel tubes for high-pressure chemical fertilizer equipment
GB 9948: Seamless steel tubes for petroleum cracking

ASME: American society of mechanical engineers
ASME SA-106: Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASME SA-192M: Seamless Carbon Steel Boiler Tubes for High Pressure
ASME SA-209M: Seamless carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
ASME SA-210M: Seamless Medium-carbon Steel Boiler and Superheater Tubes
ASME SA-213M: Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes