JIS H3300 C1220T Seamless Copper Alloy Tube For HVAC systems

1. JIS H3300 C1220T Seamless Tube Standard Specifications:

JIS H3300 governs the technical requirements for copper and copper alloy seamless pipes/tubes, including material composition, mechanical properties, dimensions, and tolerances. It specifically covers C1220T (phosphorus-deoxidized copper).

Current Version: JIS H3300:2018 is the latest standard, replacing earlier versions (e.g., 2006, 2009). It includes updates for fatigue strength and dimensional tolerances.

Material Compliance: C1220T-O (annealed state) aligns with JIS H3300, ensuring suitability for pressure applications like refrigeration systems.

2. JIS H3300 C1220T Seamless Tube Material Composition:

C1220 Phosphorus-Deoxidized Copper Key Properties:

High Purity: Copper content ≥99.90%, with phosphorus (0.015–0.04%) added as a deoxidizer to prevent embrittlement.

Advantages: Excellent cold workability, weldability, and corrosion resistance. Performs reliably in reducing atmospheres without hydrogen embrittlement.

Temper Designation: "T" indicates tube form, while "O" (e.g., C1220T-O) denotes soft annealing for enhanced ductility.

3. JIS H3300 C1220T Seamless Tube Manufacturing and Processing Seamless Production:

Tubes are cold-drawn to precise dimensions, with wall thicknesses ranging from 0.2 mm to 200 mm and lengths up to 12 meters.

Surface Treatment: Polyethylene insulation with embossed surfaces to prevent scratches and facilitate tape wrapping (common in HVAC kits).

Secondary Processing: Compatible with bending, welding, and cutting for custom installations.

4. Applications

Plumbing systems for hot and cold water distribution.

HVAC systems, air conditioning units, and refrigeration systems due to their heat transfer properties.

Heat exchangers

Chemical industry applications

Water supply 

Gas pipes