Hongfang - News
Global air conditioner OEM factories, refrigeration equipment assemblers and HVAC engineering contractors are troubled by unstable low-grade copper tube supplies. Inferior mixed copper raw materials contain excessive impurity elements, triggering micro pinholes and refrigerant leakage after short-term system operation; inconsistent mechanical ductility leads to cracking during on-site bending and flaring; single fixed specifications force buyers to cooperate with multiple metal pipe suppliers, increasing procurement management costs. Hongfang’s refrigeration & air conditioning dedicated copper tube adopts 99.9% high-purity deoxidized copper ingots as raw materials, with full mechanical performance testing and complete standard diameter matrix, solving production line shutdown and post-installation leakage pain points for cooling equipment manufacturers amid fluctuating metal raw material prices.
Recycled mixed copper materials with miscellaneous metal impurities form invisible micro pores inside the tube wall during extrusion molding. After long-cycle circulation of HFO and HFC refrigerants, these tiny holes expand into leakage points, resulting in complete refrigerant loss and equipment failure complaints. Hongfang exclusively uses virgin high-purity copper raw materials without recycled mixed scrap, strictly controlling impurity content within international ACR tube standards. Every batch undergoes eddy current non-destructive inspection before delivery to screen internal wall hidden flaws, fundamentally cutting the proportion of air conditioner after-sales maintenance caused by copper pipe leakage and lowering brand compensation expenditure.
Many cheap copper tubes lack stable ductility; construction workers encounter cracking at bending positions or split flared joints during pipeline connection, wasting pipe materials and delaying project installation schedules. This refrigeration copper tube optimizes cold drawing and annealing processes to form uniform internal metal grain structure, possessing moderate tensile strength and sufficient elongation rate. It supports small-radius bending and standard flaring operations without auxiliary heating treatment, reducing on-site pipe scrap rate for HVAC engineering teams and shortening overall pipeline construction cycles of central air conditioning projects.
Copper tubes doped with a large number of impurities have blocked heat transfer channels, weakening heat exchange efficiency of evaporators and condensers, making it difficult for finished air conditioners to pass high energy efficiency certification tests. High-purity copper base material delivers industry-leading thermal conductivity coefficient, accelerating heat exchange between refrigerant and air inside cooling equipment. OEM manufacturers can achieve higher energy efficiency grades without redesigning coil structures, helping finished air conditioning products gain market competitive advantages in regions with strict energy consumption standards such as Europe and Southeast Asia.
Copper pipes with unpurified raw materials easily produce oxidation film and corrosion pits under long-term contact with refrigerants and humid air, gradually blocking refrigerant circulation pipelines and reducing cooling capacity. The pure copper matrix forms a dense self-protective oxidation layer naturally, resisting erosion from mainstream refrigerants including R32, R410A and low-GWP new refrigerants. For outdoor split air conditioners, cold storage equipment and marine refrigeration units operating in high-humidity and salt-fog environments, it greatly extends the full service cycle of the refrigeration loop and reduces equipment regular replacement frequency.
Most copper pipe factories only stock partial single sizes, forcing air conditioner manufacturers to split orders across multiple metal suppliers for different model production lines, increasing supplier docking labor and batch quality difference risks. Hongfang covers full mainstream outer diameter specifications from φ8 to φ19, matching household split air conditioners, cabinet units, commercial central air conditioning and small cold storage pipeline layout demands. HVAC OEM factories can complete all refrigeration pipeline raw material procurement through one single supplier, unifying batch texture and mechanical performance and simplifying raw material inventory management work.
European and North American cooling equipment brands require complete raw material inspection documents for factory production audits, while small copper processing workshops cannot provide standardized tensile, elongation and purity test reports. Each shipment of Hongfang refrigeration copper tube attaches full batch quality certificates, raw material component test sheets and mechanical performance data, fully complying with ASTM B280 and EN 12735 international ACR tube standards. Complete traceability documents help air conditioner OEMs smoothly pass overseas third-party factory audits and customs clearance inspection without shipment detention risks.
