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Copper tube is a hollow cylindrical product made from copper or copper alloys, manufactured primarily through extrusion or drawing processes. It offers excellent thermal conductivity, corrosion resistance, antimicrobial properties, and ease of joining, making it the preferred material for plumbing, refrigeration, and medical gas systems. Common international standards include ASTM B88 (USA for water service), EN 1057 (Europe for general purposes), JIS H3300 (Japan for copper and copper alloy tubes), and BS 2871 (UK). Typical grades include C12200 (phosphorus-deoxidized copper), C11000 (electrolytic tough pitch copper), Cu-DHP (EN), and C1220T (JIS). To compare different copper tube standards, search “ASTM B88 vs EN 1057 copper tube comparison”; for thermal conductivity data, use “copper tube thermal conductivity chart”; to check pressure ratings, search “copper tube working pressure table ASME”; for material property comparisons, use “C12200 vs C11000 copper tube performance”.
China’s domestic standards for copper tubes mainly follow GB/T 17791 (air conditioning and refrigeration copper tubes), GB/T 18033 (water supply copper tubes), and GB/T 1527 (drawn copper tubes). Common Chinese grades include T2 (pure copper, equivalent to C11000), TP2 (phosphorus-deoxidized copper, equivalent to C12200), and TU2 (oxygen-free copper). These tubes are available in various outer diameters ranging from 4mm to 108mm, with wall thicknesses from 0.5mm to 4mm. Copper tubes are supplied in both straight lengths and coils depending on application requirements. To cross-reference Chinese grades with international equivalents, search “TP2 copper equivalent ASTM”; for Chinese copper tube dimension tables, use “GB/T 17791 copper tube size chart”; to verify mechanical property requirements, search “Chinese copper tube tensile strength standard”; for a sample Chinese mill test certificate, use “China copper tube MTC example”.
Copper tubes are widely used in air conditioning and refrigeration systems (as condenser and evaporator coils), plumbing and water supply systems (for hot and cold water distribution), medical gas pipelines (oxygen, vacuum, compressed air), heat exchangers (solar water heaters, radiators), and gas distribution networks. In HVAC applications, soft copper coils are preferred for easy bending and installation, while hard drawn straight tubes are used for rigid piping systems. For medical gas systems, C12200 (TP2) copper tubes with thoroughly cleaned and capped ends are mandatory to ensure purity. To select tubes for air conditioning applications, search “ACR copper tube size chart”; for medical gas system requirements, use “medical gas copper tube ASTM B819”; to review plumbing system installation standards, search “copper tube for potable water installation guide”; for heat exchanger application examples, use “copper tube for solar water heater coil design”.
When sourcing copper tubes internationally, critical parameters include grade and standard, outer diameter and wall thickness tolerances, temper condition (soft, half-hard, hard), tube length or coil weight, and end finish (plain, belled, or threaded). Also confirm whether the tubes are annealed (for bending applications) or drawn (for rigid applications), and whether internal cleanliness meets specific industry requirements (e.g., medical gas or refrigeration). For dimensional tolerance standards, search “copper tube thickness tolerance ASTM B88”; to compare temper conditions for different applications, use “soft vs hard copper tube bending comparison”; for current international pricing trends, search “copper tube price per kg 2025”; to locate certified global suppliers, use “copper tube manufacturers Europe directory”.
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