GB/T 34020.3-2017
ActiveDouble wall copper-brazed steel tubes—Part 3: Tubing system for air conditioner and refrigeration
双层卷焊钢管 第3部分：空调和制冷设备管路系统用管
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and test methods for double wall copper-brazed steel tubes used in air conditioner and refrigeration tubing systems. It is applied in the manufacturing of refrigerant lines, condenser coils, and evaporator connections for residential, commercial, and automotive HVAC and refrigeration equipment. The standard ensures leak-tightness, pressure resistance, and corrosion performance in systems using common refrigerants like R-410A and R-134a.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.