Pressure Risk in High-Pressure Boilers? — H Fin Tube with 20G Steel Ensures Strength

High-pressure steam systems are exposed to extreme mechanical stress, where tube burst or fatigue failure can cause costly shutdowns and safety risks. To ensure maximum strength and reliability, Zhongyue Metallurgy manufactures H Fin Tubes using 20G or 12Cr1MoVG pressure-resistant steel as the base material, combined with 3.5mm-thick welded fins and wheel-type L-fin structural reinforcement.

Each tube undergoes full-penetration automatic welding, producing uniform weld seams with high bonding strength. The resulting structure achieves a working pressure resistance of up to 9.8 MPa. The H-shaped fin geometry not only expands the heat exchange area but also enhances mechanical stiffness, improving resistance to thermal deformation and vibration by over 25%.

Every batch is subjected to hydrostatic, pneumatic, and eddy-current testing to ensure leak-free performance. Externally, the tubes are coated with red oxide zinc phosphate primer, and internally, they’re treated with VCI corrosion inhibitors to prevent oxidation during long-term service.

These high-strength finned tubes are widely used in coal-fired power plants, high-pressure boilers, and chemical heating systems, helping customers achieve safer, more stable, and energy-efficient operations. Zhongyue’s pressure-resistant H Fin Tube solution delivers superior reliability, extended lifespan, and reduced maintenance costs in demanding industrial environments.