Introduction

TU1 Copper Tube is made from ≥99.9% pure oxygen-free copper with ≤0.02% oxygen, offering excellent electrical and thermal conductivity for HVAC, refrigeration, electrical, and industrial applications.

Advantage

Smooth Internal Surface

Seamless manufacturing produces smooth interiors, reducing friction and wear for fluids or gases flowing inside.

Good Formability

Can be bent, flared, or shaped without cracking, enabling easy installation in complex systems.

Corrosion Resistance

Low oxygen (≤0.02%) improves rust and oxidation resistance for HVAC, refrigeration, and marine use.

Specification

Material standards	ASTM B68 (Seamless Copper Tube) ASTM B75 (Copper Tube for General Plumbing and Heating) EN 1057 (Copper Tube for Water and Gas) JIS H3300 (Copper Alloy Tube)
Outer Diameter	1 mm – 100 mm
Wall Thickness	0.2 mm – 15 mm
Standard Lengths	3 meters – 6 meters
Tensile strength	≥210 MPa
Yield strength (0.2%)	≥70 MPa
Elongation	≥30%
Hardness	40–70 HRB (depending on temper)

Typical chemical composition(%)

Copper (Cu)	Oxygen (O)	Iron (Fe)	Zinc (Zn)
99.9% minimum	≤0.02%	≤0.10%	≤0.05%

Applications

HVAC and Refrigeration

Marine and Offshore

Medical Devices

Customization Services

Customizable Item	Options
Outer Diameter (OD)	1 – 100 mm or project-specific
Wall Thickness	0.2 – 15 mm or custom thickness
Length	3 – 6 m standard, or cut-to-length per order
Surface Finish	Polished, cleaned, coated, annealed
Tube Shape	Round, square, rectangular, oval
Packaging	Bundles, wooden crates, protective wrap, export-ready packaging

Our Strength

Reliable Quality

ISO-certified processes and partnerships with leading steel mills guarantee consistent material quality.

Large Inventory

An extensive stock of plates, pipes, and rods enables fast order fulfillment.

Custom Processing & OEM

Advanced machining centers provide cutting, bending, CNC machining, welding, and branding in accordance with customer specifications.

Rapid Customer Response

Professional 24/7 service ensures quick responses to technical and logistics inquiries.

Certification

ISO 9001 certified, with Mill Test Certificates (MTC) and optional EN 10204 3.1/3.2 third-party inspection reports to guarantee material traceability and compliance with ASTM, UNS, and EN standards.

Our certificates

FAQ

Q: What applications is the TU1 copper tube commonly used for?

A: HVAC and refrigeration systems, electrical and electronics components, marine and offshore equipment, medical devices, and heat exchangers.

Q: What are the advantages of TU1 copper tube over ordinary copper tubes?

A: TU1 is oxygen-free, seamless, with ≥99.9% copper content, offering superior conductivity, corrosion resistance, and mechanical strength.

Q: Can TU1 copper tubes be joined with standard fittings?

A: Yes, seamless design and standard OD/wall thickness allow compatibility with conventional copper tube fittings, flaring, or soldering methods.

Q: Are custom sizes or shapes available?

A: Yes, diameters (1–100 mm), wall thickness (0.2–15 mm), lengths (3–6 m), and tube shapes (round, square, rectangular, oval) can be customized.

Q: How can I verify the quality of the TU1 copper tube?

A: Each batch can be supplied with Mill Test Certificates (MTC) and optional chemical, dimensional, and mechanical testing reports.

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TU1 Copper Tube