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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale JIS H3300 Standard Tubes

JIS H3300 Standard Tubes

-- Steady & Reliable Manufacturer --

Japanese Precision for Global Engineering

The JIS H3300 standard is the Japanese Industrial Standard for seamless copper and copper alloy pipes and tubes. It is globally recognized for its stringent requirements regarding dimensional tolerances, surface quality, and mechanical properties. In the world of HVACR, particularly where Japanese brands like Daikin, Mitsubishi, and Panasonic lead the market, adherence to JIS H3300 is essential. At Zhejiang Jingliang, we manufacture copper tubing that fully complies with the JIS H3300 C1220 series, ensuring that our products meet the high expectations of Japanese OEMs and international contractors working on Japanese-engineered projects. This standard covers a wide range of applications, including plumbing, heat exchangers, and chemical piping, with a particular focus on the purity and temper of the material to ensure long-term durability in seismic zones and humid climates.

What sets JIS H3300 apart is its detailed classification of tempers and its strict limits on impurities. Our JIS-compliant tubing undergoes specialized bright annealing to achieve the precise "O" (Soft), "1/2 H" (Half-Hard), or "H" (Hard) tempers defined by the standard. This ensures that the tube performs exactly as expected during flaring or bending. For the refrigeration industry, we follow the JIS H3300 "Appendix" requirements for internal cleanliness, which are among the most rigorous in the world. This focus on precision makes our JIS standard tubes the preferred choice for high-end electronics cooling and advanced VRF systems. By manufacturing to this standard, we provide our clients with a "Global Passport" for their products, ensuring that any system built with our tubing can be serviced and maintained anywhere in the world using standard Japanese-spec fittings and components.

JIS H3300 Technical Parameters

FeatureJIS H3300 Specification
Material GradeC1220 (Cu-DHP), C1201, C1020 (OF)
TempersO, OL, 1/2H, H (Per JIS H0500)
Tolerance (OD)±0.03mm to ±0.05mm (Grade A)
Wall Thickness0.5mm to 2.0mm+ (Highly Precise)
Tensile StrengthMin 205 N/mm² (O) to 315 N/mm² (H)
ElongationMin 40% (O-temper)
Grain Size0.025 to 0.060 mm
Flattening TestNo cracks when flattened to 3x wall thick
ExpandabilityMin 40% expansion of OD without cracking

Applications in Japanese-Spec Projects

JIS H3300 standard tubes are the default choice for any HVAC installation involving Japanese Brand Air Conditioners and VRF systems. They are also used extensively in the Japanese automotive supply chain for radiator and heater core production. In the electronics sector, these tubes are used to manufacture high-efficiency Heat Sinks and liquid cooling loops for data centers. The standard is also common in the construction of high-purity Chemical Processing Plants and laboratory gas networks throughout Asia. Because of its strict dimensional accuracy, it is frequently specified for the production of Solar Thermal Collectors and geothermal heat exchangers. In Japan and countries following JIS standards, these tubes are also the standard for domestic hot and cold water supply, offering superior resistance to the "blue water" corrosion phenomenon through careful phosphorus control.

Advantages of JIS-Grade Manufacturing

The primary advantage is "Precision Compatibility"—using JIS H3300 tubing ensures a perfect fit with Japanese flare nuts and Refnet joints, which are common in high-end HVAC systems. Another benefit is "Superior Workability"—the grain size control required by JIS ensures that the tube can be flared or expanded without the "orange peel" effect or cracking, even in cold environments. Our JIS-grade tubes also offer "Unmatched Internal Cleanliness," which is vital for protecting the sophisticated electronic expansion valves (EEVs) used in modern Japanese air conditioners. From a "Market Access" perspective, having JIS-certified tubing allows contractors to bid on premium projects managed by Japanese engineering firms. Finally, the "Seismic Resilience" of JIS-spec copper, which maintains its ductility over decades, provides an extra layer of safety for piping systems in earthquake-prone regions.

Shipping and Compliance Standards

We ship JIS H3300 tubes in both pancake coils and straight lengths. To protect the high-quality surface finish required by the standard, we use specialized anti-tarnish paper and moisture-proof plastic wrapping. Payment is typically T/T or L/C at sight. Every shipment is accompanied by a Mill Test Certificate that explicitly references JIS H3300 and includes the results of the chemical analysis, tensile tests, and grain size measurements. We optimize our container loading for the Japanese market, utilizing 4-meter or 6-meter straight lengths as requested. Our proximity to the port of Ningbo allows us to offer very competitive lead times to Japan and the rest of the Asia-Pacific region. We also provide "JIS-Mark" labeling for easy identification in your warehouse or on the job site.

  • Q: Is JIS H3300 interchangeable with ASTM B280?
  • A: While very similar, the tolerances and temper designations differ slightly. For projects specifically designed by Japanese firms, using JIS H3300 is recommended to ensure compliance with the design specifications.
  • Q: What does the "C1220" designation mean in JIS?
  • A: C1220 is the JIS equivalent of C12200 (Phosphorus Deoxidized Copper), the standard material for HVAC and plumbing worldwide.
ABOUT US
30+YEARS OF
EXPERIENCE
About Us

A Reliable Partner of the Copper Tube Industry

Zhejiang Jingliang Copper-Tube Products Co., Ltd is China JIS H3300 Standard Tubes and JIS H3300 Standard Tubes Factory, which established in 1994, has been deeply involved in the copper tube industry for over three decades. The company primarily produce various specifications of products such as copper tubes, brass tubes, copper square tubes, fin copper tubes, copper capillary tubes, condenser copper tubes, copper evaporator tubes, and conductive rods, which are of quality and have earned the trust and acclaim of customers both domestically and internationally.

Wide Applications:

These products are widely used in various fields including air conditioning, refrigeration, heat exchange, sanitary ware, automotive, machinery, electric furnaces, and chemical industries.

Convenient Transportation:

Strategically located in Tangpu Town, renowned as the “home of copper tubes” in East China. Our company enjoys a prime location, adjacent to the Shangsan Expressway and National Highway 104, and is conveniently situated just over 70 kilometers from Hangzhou and Ningbo, ensuring easy accessibility and a business position.

Strong Financial Resources:

With its strong financial resources and advanced copper tube processing technology, our company holds an advantageous position in market share, brand value, technological content, and product quality, becoming a preferred supplier for many listed groups.

Large Scale Production:

The company occupies an area of over 20,000 square meters, with a construction area of 12,800 square meters. In 2022, our annual production exceeded 7,500 tons, with a value output of up to 450 million yuan, demonstrating our strong production capacity and market competitiveness.

Comprehensive Industry Chain:

Jingliang has now developed into a complete industrial chain integrating smelting, extrusion, drawing, precision rolling, and annealing. It has been awarded multiple honors, including "Top Ten Copper Tube Enterprises" and "Leading Taxpayer in the Copper Tube Industry".

Smart Manufacturing:

Jingliang Copper-Tube Products will better integrate the concept of factory construction into its corporate development strategy, insist on refining technology and polishing products more finely, and the future of "intelligent manufacturing".

Genuine Cooperation:

Zhejiang Jingliang Copper-Tube Products Co.,Ltd warmly welcomes friends from all walks of life to visit and offer guidance. We look forward to joining hands with you to create a brilliant future together.

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