B-Tubes for Folded Radiator is mainly formed by multi-step rolling and brazing, with higher pressure resistance and heat transfer strength. It is suitable for automotive heat exchange systems and industrial HVACR heat exchange equipment, and has standardized configurations in transportation interiors and industrial temperature control scenarios.
Core application scenarios
Automotive heat exchange system
Main heat exchange tube of passenger car/commercial vehicle radiator: replaces traditional single seam welded flat tube, improves burst pressure strength, and adapts to engine high-temperature cooling cycle.
Intermediate cooler (IC): Stable heat dissipation under high boost and high airflow impact, ensuring power output and durability.
Oil Cooler: Provides precise oil temperature control for the engine and transmission, especially suitable for heavy-duty and high-performance vehicles.
Heater Core: Ensure rapid heating and constant temperature inside the car, meeting NVH and durability requirements.
Condenser and evaporator (AC system): undertake efficient phase change heat transfer in the air conditioning circuit, improving refrigeration efficiency and reliability.
Industrial and mobile device temperature control
Engineering/agricultural machinery radiators: To cope with dust, vibration, and high load conditions, and enhance structural stability.
Rail transit/ship heat exchange: meets low smoke, low toxicity, weather resistance, and fire prevention requirements such as BSS 7238, used for train air conditioning and cabin temperature control.
Industrial HVACR equipment: As the core heat exchange tube in large condensers, evaporators, and oil coolers, it is suitable for continuous operation and long service life requirements.
Key points of selection
Material and process: Commonly used aluminum brazed plates are formed by rolling and pressing, with both ends folded and the inner side brazed together. They have better pressure resistance and strength than traditional seam welded pipes.
Performance indicators: Meet flame retardant requirements such as UL 94 V-0 and LOI ≥ 28%; Pay attention to temperature resistance range (usually -40~150 ℃), pressure resistance, and brazing yield.
Adaptation requirements: Used for forced air cooling/liquid cooling, high airflow, vibration impact, and long-life scenarios, priority should be given to models with reliable folding edge brazing and tightly fitted fins.
