JIS H3300 C1220T Phosphorus Deoxidized Copper Steel Seamless Tube

JIS H3300 is a Japanese industrial standard, titled "Copper and Copper Alloy Tubes". It covers the technical requirements for seamless and welded tubes of copper and copper alloys, including chemical composition, dimensional tolerances, mechanical properties, and test methods.

C1220 is a JIS material designation for copper. "C" represents copper, and "12" represents a specific alloy group. C1220 is a phosphorus-deoxidized copper, "20" is a sub-designation within this group, and "T" is a suffix indicating the condition or type of copper pipe. In the JIS H3300 standard, "T" specifically refers to "lightweight pipe for general piping." This is a thin-walled pipe, typically produced in a series with fixed outer diameters, suitable for most fluid transport applications.

JIS H3300 C1220T Copper Material Properties and Advantages

• Excellent weldability and brazing properties: This is one of the most important advantages of C1220. Phosphorus deoxidation treatment results in extremely low oxygen content (typically ≤ 0.001%), thus preventing "hydrogen slag"—the phenomenon where hydrogen reacts with cuprous oxide in a reducing flame to generate water vapor, causing internal cracking of the copper—during high-temperature brazing.
• Excellent thermal conductivity: Pure copper itself is one of the metals with the best thermal conductivity, making it ideal for use as heat transfer tubes in heat exchangers (such as finned tubes in condensers and evaporators).
• Good corrosion resistance: It has good corrosion resistance to water, air, and non-oxidizing acids. It forms a protective oxide film in water supply systems, resulting in a long service life.
• Excellent processability and formability: It can be cold-worked by bending, flaring, and tube expansion, making it easy to install.
• Some antibacterial properties: Copper ions have natural antibacterial properties, giving it a certain hygienic advantage in water supply pipelines.

JIS H3300 C1220T Copper Steel Seamless Tube Chemical Composition

What applications are JIS H3300 C1220T Copper Steel Seamless Tubes mainly used in?

• Air Conditioning and Refrigeration Industry: Refrigeration Piping: Refrigerant pipes connecting indoor and outdoor units; Heat Exchanger Tubing: Finned tubes (usually thinner "lightweight tubes") inside the condenser and evaporator.

• Water Supply and Sanitary Systems: Hot and cold water supply lines in buildings, gas pipelines, solar water heater piping.

• Industrial Heat Exchangers: Heat transfer tubes of various shell-and-tube and plate heat exchangers.

• Others: Electrical conduits, compressed air pipelines, etc.