What is difference of standards ASTM B280, JIS H3300, EN12735-1, AS/NZ 1571 ?

The main difference is their application and regional focus, with ASTM B280, EN 12735-1, and AS/NZS 1571 all specifying clean copper tubes (ACR/Refrigeration Grade) for HVAC/R, requiring low internal residue, while JIS H3300 is a broader Japanese standard for general copper tubes, covering various applications including water, gas, and refrigeration, often focusing on dimensional accuracy and specific material grades. Key distinctions lie in their exact cleanliness limits (e.g., carbon residue), dimensional tolerances, allowed copper alloys (like C12200 for ASTM), and specific testing protocols, though they serve similar high-purity purposes in modern refrigeration.


Here’s a breakdown:
• ASTM B280 (American): Focuses specifically on seamless copper tubing for Air Conditioning & Refrigeration (ACR) use, requiring high internal cleanliness (low residue) and suitable for modern refrigerants like R-410A.
• EN 12735-1 (European): Similar to B280, this standard defines copper tubes for refrigeration and air conditioning, also demanding very low carbon residue for cleanliness.
• AS/NZS 1571 (Australian/New Zealand): Also for ACR applications, setting strict limits for internal residue, matching the cleanliness requirements of ASTM B280 and EN 12735-1.
• JIS H3300 (Japanese): A broader standard for copper pipes, including those for HVAC/R (often Type C1220 or C1220T), but also covering plumbing and general uses, known for precise dimensions and high-quality finishes, with cleanliness being a key aspect for ACR variants.


Key Differences Summarized:
• Region: Each standard serves a distinct geographical market (US, Europe, ANZ, Japan).
• Application Focus: B280, EN 12735-1, and AS/NZS 1571 are dedicated to the stringent requirements of refrigeration, while JIS H3300 covers a wider range, including plumbing and general use, with specific grades for refrigeration.
• Cleanliness: All require high cleanliness but have specific residue limits (e.g., max 0.038g/m² total residue for AS/NZS 1571/ASTM B280).
• Alloys: While similar, specific copper alloys (e.g., UNS C12200 for ASTM) and material grades (like JIS C1220T) are defined.


In essence, they are regionally specific versions of the same high-purity, clean copper tubing standard for the demanding refrigeration and air conditioning industries, with JIS H3300 being a broader national standard that includes similar high-purity tubes.