As the global manufacturing industry transforms towards high efficiency and energy saving, threaded copper tubes, as core materials in the field of heat exchange, have played an irreplaceable role in air conditioning, refrigeration equipment, new energy and other fields in recent years. However, many consumers and even industry practitioners still have a lack of knowledge about this subdivided material. This article will systematically analyze the existence value and technological innovation direction of threaded copper tubes from the dimensions of technical principles, classification standards, application scenarios, market trends, etc., and focus on the innovative practices of Zhejiang Hengsen Industrial Co., Ltd. in this field in China to provide professional reference for the industry.
Table of Contents
1. Threaded copper tube: definition and technical principles
2. Classification and specifications: multiple forms from internal threads to external threads
3. Core application areas: the hero behind efficient heat transfer
4. Technical advantages: Why can threaded design subvert tradition?
5. Global market trends and the rise of China's manufacturing
6. Hengsen Industry: Innovative practices of threaded copper tube technology leaders
7. Future prospects: technological innovation directions under the green economy
1. Threaded copper tube: definition and technical principles
Threaded copper tube refers to a tube with a spiral groove structure formed on the inner or outer wall of the copper tube through precision processing. Its core technical principle is based on increasing the heat transfer surface area and enhancing the fluid turbulence effect:
Surface area improvement: Taking the 9.52mm standard internal thread copper tube as an example, its inner wall thread structure can increase the effective contact area by about 30%, significantly improving the heat exchange efficiency.
Turbulence enhancement: The spiral design of the thread forces the fluid (such as refrigerant) to generate vortices during the flow process, breaking the laminar boundary layer, and the heat transfer coefficient is increased by 20%-50% compared with the smooth copper tube.
2. Classification and specifications: Multiple forms from internal threads to external threads
Depending on the position and purpose of the thread, threaded copper tubes can be divided into two categories:
(1) Internal thread copper tube
Typical parameters: outer diameter 5-12.7mm, tooth height 0.15-0.30mm, helix angle 10°-30°, such as TP2M2φ9.52×0.30 copper tube has been included in the Chinese national standard (GB/T20928-2007).
Innovative design: The "L-shaped spoiler strip internally threaded copper tube" developed by Hengsen Industrial further improves the heat transfer efficiency by 12% by superimposing a secondary spoiler structure.
(2) Externally threaded copper tube
Functional positioning: Mainly used in mechanical connection and pressure-resistant scenarios, such as hydraulic systems and high-precision instruments and meters.
Market trends: The market size of energy-saving externally threaded copper tubes in China is expected to exceed 150 billion yuan from 2025 to 2030, with an annual compound growth rate of 8.5%.
3. Core application areas: The hero behind efficient heat transfer
4. Technical advantages: Why can threaded design subvert tradition?
Compared with traditional smooth copper tubes, threaded copper tubes have three breakthrough advantages:
Energy efficiency revolution: In the field of air conditioning, the use of 5mm internally threaded copper tubes can increase the energy efficiency ratio (EER) of the whole machine by 0.3-0.5, helping enterprises meet the EU ERP energy efficiency level 3 standard.
Material saving: After the tube diameter is reduced from 9.52mm to 5mm, the copper material consumption of a single air conditioner is reduced by 40%, and the production cost is reduced by 15%-20%.
Reliability upgrade: Hengsen Industry has reduced the rupture rate of copper tube expansion from 1.2% to 0.05% through the patented design of "semi-circular tooth top + arc angle transition".
5. Global market trends and the rise of Chinese manufacturing
Market size: In 2023, the global threaded copper tube market size will reach US$21.8 billion, with China accounting for more than 35%, and the annual output will exceed 4 million tons.
Technological competition: Japanese companies (such as Hitachi and Mitsubishi) still occupy 60% of the high-end market, but Chinese companies have achieved import substitution through "ultra-thin wall (0.2mm) + micro-tooth density (80 teeth/circle)" technology.
Policy drive: Driven by China's "dual carbon" strategy, high-efficiency threaded copper tubes have been included in the "Green Technology Promotion Catalogue", and the procurement subsidy has reached 200 yuan/ton.
6. Hengsen Industry: Innovative Practice of the Technology Leader of Threaded Copper Tubes
Zhejiang Hengsen Industry Co., Ltd. (product link) is a national-level specialized "little giant" enterprise, which has achieved three major breakthroughs in the field of threaded copper tubes:
Process innovation: Developed "multi-stage asynchronous spinning forming" technology, with high tooth precision controlled at ±0.02mm, and the yield rate increased to 99.3%.
Material upgrade: C19400 copper alloy is used, with a tensile strength of 450MPa, which is 25% higher than the traditional TP2 copper tube.
Green smart manufacturing: A full-process digital workshop was built, and the energy consumption per unit product was reduced by 18%, and it was awarded the title of "Green Factory" by the Ministry of Industry and Information Technology.
7. Future Outlook: Direction of technological innovation under the green economy
Miniaturization: 3mm diameter internal threaded copper tubes have entered the laboratory stage, and the target is to be applied to micro heat pumps and 5G base station heat dissipation.
Composite: Progress has been made in the research and development of "copper-graphene" composite pipes, and the thermal conductivity is expected to exceed 500W/(m·K) (pure copper is 401W/(m·K)).
Intelligent: Hengsen Industry is deploying an AI-driven "adaptive thread parameter system" that can dynamically optimize the tooth structure according to working conditions.
Summary
Threaded copper pipes are by no means a fictitious concept, but the "industrial blood" that supports modern efficient heat transfer systems. From household air conditioners to spacecraft thermal control, from new energy vehicles to nuclear power plant condensers, their technological evolution has always resonated with the human energy efficiency revolution. Chinese manufacturing companies such as Hengsen Industry are breaking through technical barriers through continuous innovation and promoting the global threaded copper pipe industry to move towards high precision, green and intelligent directions. For more technical parameters or customized solutions, please visit the official website of Hengsen Industry for inquiries.