Difficult Cleaning? — H and Perforated L Fin Designs Support High-Pressure Cleaning

In coal-fired power plants, economizers, and waste heat recovery systems, cleaning difficulty is one of the most common issues that affect long-term performance. Traditional spiral fin tubes tend to trap soot and ash between tightly wound fins. Over time, high-temperature operation hardens these deposits, creating thermal resistance and forcing frequent shutdowns for manual cleaning.

Zhongyue Metallurgy addresses this challenge with its advanced H-Type Finned Tubes and Perforated L-Type Finned Tubes, both designed for easy maintenance and high-pressure cleaning. The H-type fin features a straight-through arrangement with uniform spacing (fin pitch ≥10mm), allowing direct air-blowing or brushing during cleaning. The perforated L-type fin includes vent holes that create micro-turbulence during operation, naturally preventing dust adhesion and achieving self-cleaning performance without halting production.

Additionally, the Wheel-Type L Fin Tube introduces enhanced airflow disruption, further reducing ash accumulation and maintaining efficient heat exchange. These designs significantly extend the cleaning interval, cutting maintenance frequency by over 30% and lowering downtime costs.

Each tube is made from carbon steel, alloy steel, or stainless steel (A179, A210, TP304, 20G, 12Cr1MoVG, etc.) and can be manufactured up to 18 meters in length with fin thicknesses ranging from 1.5–3.5mm. The external surface is coated with a red oxide zinc phosphate primer for corrosion resistance, while the internal wall is protected with a VCI (Volatile Corrosion Inhibitor) layer for long-term cleanliness and protection.

Field results show that Zhongyue’s H and Perforated L Fin Tubes improve maintenance efficiency, operational stability, and system reliability. They are widely used in power generation, industrial heating, and waste heat recovery systems, providing a superior solution for clean, efficient, and low-maintenance heat transfer.