DELLOK is a professional heat exchanger manufacturer with 20 years of industry experience, specializing in custom heat transfer solutions for diverse applications including metallurgy, food processing, petrochemical, pharmaceutical, beverage production, wastewater treatment, and refrigeration systems.

The fin strip is precision-wound into machined grooves and securely locked into place by back filling with base tube material. This advanced manufacturing process ensures maximum heat transfer efficiency is maintained even at high tube metal temperatures up to 400°C.

Our manufacturing tool utilizes two non-cutting plates set at 90° to the base tube axis. The first plate creates precision grooves for metal spinning, while the second directs the ribbon into the groove and sets the fin foot through controlled pressure on the displaced metal. Specialized tungsten carbide plates enable production of G embedded fin tubes with austenitic steel or exotic alloy base tubes.

• Thermal Efficiency: Constant fin/tube wall contact enables reliable performance at wall temperatures up to 400°C
• Mechanical Durability: Fins are securely set throughout their entire length, preventing unwinding even when partially uprooted

High heating efficiency with rapid heating capabilities, compact volume design, minimal wind resistance, and convenient installation. Suitable for installation in wind pipes and by-pass pipe systems.

• Petroleum, chemical and petrochemical processing
• Natural gas treatment facilities
• Steel industry: blast furnace and converter systems
• Power generation: steam turbine exhaust gas condensation
• Air conditioning systems (freon, ammonia, propane)
• Waste incineration equipment
• Compressor cooling systems