The selection of boiler pipes requires a balance between heat resistance, mechanical strength, and compatibility with manufacturing processes. Below, we introduce boiler tubes made of different materials and using different processes to help you make the best choice. Our company manufactures and sells all the boiler tubes mentioned below. If you have any needs, please contact us via email at the bottom of the page; we will contact you within 8 hours.
Main Steam Pipes – Forging/Hot Rolling Process
Forging allows for control of deformation ≥30% and a final forging temperature of 900-950℃, improving the pipe’s creep resistance. Hot rolling uses normalizing + tempering, preventing the pipe from experiencing strength reduction due to localized overheating.
Superheater Tubes: Cold Drawing Process
These boiler tubes achieve precise dimensions through multiple cold drawing processes, with an outer diameter deviation maintained at ±0.05mm and a wall thickness deviation of ±0.05mm. The surface undergoes triaxial grinding, and all pipes have undergone flaw detection and hydrostatic testing, ensuring dimensional accuracy while improving corrosion resistance and ensuring leak-free and crack-free pipelines.
– Selection Criteria:
Operating temperature ≥ 600℃: P92/T92 heat-resistant steel is preferred, combined with – forging/hot rolling processes.
Temperature ≤ 450℃ and medium pressure environment: SA-106 carbon steel forgings are selected, using cold drawing processes to effectively control costs.
Corrosive media environment: Duplex steel is used, or the pipe surface is galvanized to improve corrosion resistance.
