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Copper Seamless Tube

Copper Seamless Tubes are seamless round tubes made of high-purity copper. They are formed directly from solid copper billets using processes such as extrusion, continuous casting and rolling, or upward drawing. The entire tube body has no welded joints or longitudinal welds, ensuring smooth and uniform internal and external surfaces, consistent wall thickness, and no potential weaknesses.
Unlike welded copper tubes, seamless copper tubes are continuously processed from a single piece of metal. This characteristic means that the tube wall has no welds or joints throughout, resulting in higher structural integrity, stronger pressure resistance, and excellent burst resistance. This manufacturing process makes it particularly suitable for harsh environments requiring high pressure, high temperature, or zero leakage.

Parameters of Copper Seamless Tube

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UNS Copper & Copper Alloys
  No. Material Name Material Type Main Alloying Elements
  C14500 Tellurium Copper High-Conductivity Free-Machining Copper Cu + Te
  C17200 Beryllium Copper (High Strength) Precipitation-Hardened Copper Alloy Cu + Be
  C17300
Free-Machining Beryllium Copper
Leaded Beryllium Copper Alloy Cu + Be + Pb
  C17510 Beryllium Nickel Copper High Strength & High Conductivity Copper Alloy Cu + Be + Ni
  C18150 Chromium Zirconium Precipitation-Hardened Copper Alloy Cu + Cr + Zr
  C19200 Iron-Bearing Copper Fe-Cu Copper Alloy Cu + Fe
  C19210
Iron-Bearing Copper (Enhanced)
Fe-Cu Copper Alloy Cu + Fe
  C19400 Iron Copper Alloy High-Strength Conductive Copper Alloy Cu + Fe
Brass Series (Cu-Zn Alloys)
  No. Material Name Material Type Main Alloying Elements
  C22000 Commercial Bronze Low-Zinc Brass Cu + Zn
  C23000 Red Brass Cu-Zn Brass Alloy
  C24000 Low-Zinc Brass Forming Brass
  C26000 Cartridge Brass (70/30) Alpha Brass
  C26800 High Brass (65/35) Alpha Brass
  C27000 Deep Drawing Brass (63/37) Alpha-Beta Brass
Brass Series (Cu-Zn Alloys)
  No. Material Name Material Type Main Alloying Elements
  C60800 Aluminum Bronze High-Conductivity Free-Machining Copper Cu + Al
  C61300 Aluminum Bronze (Nickel Modified) Precipitation-Hardened Copper Alloy Cu + Al + Ni
  C61900
High-Strength Aluminum Bronze
Leaded Beryllium Copper Alloy Cu + Al + Fe
  C62300 Nickel Aluminum Bronze High Strength & High Conductivity Copper Alloy Cu + Al + Ni
  C63000 Nickel Aluminum Bronze (High Strength) Precipitation-Hardened Copper Alloy Cu + Al + Ni

Characteristics of FengDie's Copper Seamless Tube

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Seamless Manufacturing Process 

No welds or seams → uniform structure, excellent pressure resistance, zero risk of weld leakage, ideal for high-pressure and vacuum applications.

High Purity Copper Material 

≥99.9% pure copper (Cu-DHP or equivalent grade), ensuring maximum thermal conductivity, electrical conductivity and long-term corrosion resistance.

 

Superior Thermal Conductivity 

Outstanding heat transfer efficiency — one of the best among all engineering metals — perfect for air conditioning, refrigeration, heat exchangers, and solar thermal systems.

 

Excellent Corrosion Resistance 

Naturally resistant to oxidation, pitting, and most common water/chemical corrosion; no scaling inside the tube, maintaining clean flow over decades.

 

 

Copper Seamless Tube

High Ductility & Easy Formability

Superb plasticity and bendability, easy to flare, bend and install even in complex layouts, reducing joints and potential leak points.

 

Precise Dimensional Tolerance

Tight OD, wall thickness and straightness control (cold-worked precision), smooth inner and outer surface, low flow resistance, compatible with standard fittings

Know Detailed Information
Please Download Catalogue Here  

Copper Seamless Tube

Your Expert High Precision Copper Seamless Tube Supplier

About FENGDIE

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Changzhou Fengdie Metal Technology Co., Ltd.is leading manufacturer and supplier of high-precision steel tubes based in China, we specialize in cold rolled precision seamless steel tubes, cold drawn precision tubes, precision cold rolled tubing, and related products such as Copper Seamless Tube、hydraulic cylinder tubes, Precision Steel Tube、Precision Rolled Tube、Premium Shock Absorbers. With years of expertise in advanced cold rolling and cold drawing processes, we deliver seamless steel tubes that meet stringent international standards including DIN 2391, EN 10305-1/2/4, ASTM A519, and JIS G3445.

Our products feature exceptional dimensional accuracy (±0.025–0.08mm OD tolerance), superior surface finish (Ra ≤0.2–0.8μm), enhanced mechanical properties, and reliable performance under high pressure and fatigue conditions.

Serving global markets—including Japan, Europe, and beyond—we supply Tier 1/Tier 2 customers in hydraulic systems, automotive components (shock absorbers, steering), precision machinery, construction equipment, and industrial applications. Committed to quality, we hold ISO 9001/IATF 16949 certifications, provide EN10204 3.1/3.2 material certificates, and ensure stable delivery with flexible MOQs for both trial and bulk orders.

Copper Seamless Tube
Copper Seamless Tube
Copper Seamless Tube
Copper Seamless Tube

FENGDIE Certificates And Patents

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Copper Seamless Tubes

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Respond

1.We Respond to Your Inquiry Within 12 Hours

Whether you are inquiring about cold-rolled precision tube specifications, tolerances (H8-H9 grade), surface finish (Ra≤0.4μm), steel grades (20#, 45#, 20Cr, 42CrMo), standards (DIN 2391, EN 10305, GB/T 3639), pricing, minimum order quantity, delivery time, custom sizes, samples, certifications, or bulk purchasing, our Osaka team will provide you with professional and detailed answers promptly.
 
Customized-Designs

2.We Deliver Customized Products Designs

offers fast custom product design for cold rolled precision tubes, hydraulic tubes, precision steel tubes, and welded steel tubes. From non-standard OD/WT, tighter tolerances (beyond H8/H9), special surface finishes (Ra < 0.2μm), unique steel grades, to custom end machining or enhanced mechanical properties — our engineering team delivers rapid prototyping (samples in as little as 7-15 days) and full-scale production.
 
Manufacturing

3.We Achieve Efficient Products Manufacturing

achieves efficient manufacturing of cold rolled precision tubes, hydraulic tubes, precision steel tubes, and welded steel tubes with advanced cold rolling mills, automated honing & burnishing lines, and high-speed welding systems.
 
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4.We Offer Custom Products Packaging

provides custom packaging for cold rolled precision tubes, hydraulic tubes, precision steel tubes, and welded steel tubes. Options include anti-rust oil, VCI paper, wooden crates, steel pallets, fumigation-free export boxes (IPPC/ISPM 15 compliant), or branded sleeves — tailored for safe, damage-free shipping and storage at competitive cost.
 
Welcome To Visit Our Factory
  • Changzhou Fengdie Metal Technology Co., Ltd. is a leading manufacturer and supplier of cold rolled precision seamless steel tubes, as well as high-quality copper seamless tubes, specializing in high-precision, high-performance tubing solutions for hydraulic cylinders, pneumatic systems, automotive components, precision machinery, heat exchangers, plumbing, and various industrial applications.

    With advanced cold rolling production lines (including LG/LD series periodic and multi-roll cold rolling mills), state-of-the-art annealing, straightening, and non-destructive testing equipment, we deliver tubes with tight tolerances (H8-H9 or better for steel; comparable precision for copper), superior surface finish (Ra ≤ 0.4μm), excellent wall thickness uniformity, and outstanding straightness. Using premium hot-rolled seamless blanks as raw material for steel tubes and high-purity copper materials for copper tubes, our products comply with international standards such as IATF16949, DIN 2391, EN 10305-1/2, GB/T 3639, ASTM standards, and relevant copper tube specifications (e.g., ASTM B280, B75, or equivalent).
    • Copper Seamless Tube
    • Copper Seamless Tube
    • Copper Seamless Tube
    • Copper Seamless Tube
Shipping and Delivery of Copper Seamless Tube
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End capping and sealing — Tubes are typically capped at both ends (often plastic or metal caps) and sometimes vacuum-sealed or individually wrapped to prevent moisture ingress and maintain cleanliness. 

Bundling — Straight tubes are bundled together (e.g., 50–100 pieces per bundle, depending on size) using steel straps, steel wire, plastic straps, or reinforced with wooden laths. Palletizing — Bundles are placed on wooden or metal pallets for stability, often shrink-wrapped or strapped securely. This is standard for larger or longer straight lengths. 

Coils — Soft or coiled tubes (common in refrigeration/ACR types) are coiled into reels or boxes, sometimes with protective wrapping. Additional protection — For premium or precision tubes, plastic film, kraft paper, or non-woven fabrics may wrap bundles to avoid surface marks. Larger or custom orders may use wooden crates or boxes. 

Documentation — Shipments often include quality certificates, test reports, and material data sheets.

These methods ensure tubes arrive in good condition, as copper is relatively soft and prone to deformation.

 

Typical Timelines and Considerations

Lead times vary for custom sizes or large orders within 30 business days for stock items.

What are offering about Copper Seamless Tube？
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Top-Tier Thermal Conductivity & Energy Efficiency Champion

Copper's thermal conductivity far exceeds that of aluminum, making it particularly suitable for heat pump systems, inverter air conditioners, battery cooling pipes in new energy vehicles, and high-efficiency heat exchangers. Using our thin-walled precision seamless copper tubing (≤5mm diameter trend) can significantly reduce refrigerant charge, improve system SEER/APF energy efficiency by 2-5, and contribute to carbon neutrality goals.

 

Ultra-Long Lifespan & Ultimate Corrosion Resistance

Natural antibacterial properties + dense oxide film, resistant to seawater, acids, alkalis, and formic acid corrosion, easily exceeding 50 years of service life. Widely used in medical gas tubing, antibacterial drinking water tubing (NSF/ANSI 61 certified), marine engineering, and seawater desalination systems.

 

Truly Seamless and Leak-Free

High-pressure burst testing far exceeds industry standards, eliminating the risk of longitudinal weld seams, perfectly compatible with R32/R410A/R454B new environmentally friendly refrigerant high-pressure pipelines, LPG/natural gas transportation, and industrial high-pressure cooling.

 

Installation-friendly & Cost-effective

Flexible and easy-to-bend flexible coils facilitate flaring and welding, reducing the number of joints by over 30%; supports degreasing and nitrogen-sealing packaging (medical/food grade), fixed-length cutting, and small-batch customization, reducing overall project costs.

 

Green and Sustainable First Choice

100% recyclable, compliant with LEED green building certification, EU RoHS & REACH. Seamless copper tubing is a core material for the explosive growth of global heat pumps, solar water heating, and data center liquid cooling by 2026.

FAQ of Copper Seamless Tube
Fengdie Metal is a pioneering manufacturer, stockist, and supplier of steel pipe products.
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