Home > Seamless Tube > Copper, Brass & Bronze Seamless Tubes
Inox Steel India supplies a wide range of Copper, Brass and Bronze Seamless Tubes used across industries that require excellent thermal conductivity, corrosion resistance, machinability, and long-term reliability. Manufactured as per ASTM B68, ASTM B111, B135, B359, these non-ferrous tubes deliver consistent performance in HVAC systems, heat exchangers, desalination plants, marine cooling circuits, chemical processing lines, instrumentation, and architectural applications.
Copper and copper-based alloys are preferred when a combination of heat transfer efficiency, smooth internal surface, antimicrobial performance, and corrosion resistance is required. These seamless tubes ensure uniform wall thickness, enhanced workability, and exceptional durability across a variety of engineering and fluid-handling applications.
✔ Copper, Brass & Bronze Grades Offered
These tubes are produced via extrusion, cold drawing, annealing and solution-based processes, ensuring precise dimensional accuracy and clean internal surfaces—critical for refrigeration, fluid transfer, instrumentation, and hydraulic applications.
Our non-ferrous seamless tubes are widely used by:
Backed by certified raw materials and stringent testing, Inox Steel India has established itself as a reliable supplier of copper, brass, bronze, and Cu-Ni seamless tubes across India, GCC, Africa, Southeast Asia, and Europe.
| Parameter | Copper / Brass / Bronze Seamless Tubes |
|---|---|
| Applicable Standards | ASTM B68 (Seamless Copper Tubes) • ASTM B111 (Copper-Nickel Tubes) • ASTM B135/B466 (Brass Tubes) • ASTM B111/B359 (Bronze Tubes) |
| Grades Available | Copper-Nickel: CuNi 90/10, CuNi 70/30 • Brass: C26000, C27200 • Bronze: Aluminum Bronze / Phosphor Bronze |
| Material Class | Copper Base Alloys |
| Manufacturing Process | Seamless Extruded • Cold Drawn • Annealed • Stress Relieved |
| Size Range (OD) | 3 mm to 168 mm |
| Thickness Range | 0.5 mm to 10 mm |
| Length Options | 3m • 6m • 12m • Coil Tubes • Custom Cut Length |
| Mechanical Properties | Tensile: 200–450 MPa • Yield: 80–250 MPa • Elongation: 30–45% |
| Thermal Conductivity | Very High – Suitable for Heat Exchange Applications |
| Corrosion Resistance | Excellent in seawater (CuNi 90/10 & 70/30) • High resistance to biofouling • Good resistance to stress corrosion |
| Heat Treatment | Annealed • Light Annealed • Temper-Hardening (Brass/Bronze) |
| Surface Finish | Mill Finish • Annealed & Pickled • Polished • Clean ID Tubes |
| Dimensional Tolerances | Strict OD/WT tolerances as per ASTM B68/B111/B135 |
| End Finish | Plain Ends • Deburred Ends • Flare/Flange-ready |
| Mandatory Testing | Hydrostatic Test • Eddy Current Test • Hardness • Tensile Test |
| Special Testing | Conductivity Test • Microstructure • Corrosion Test • UT (Optional) |
| Documentation Provided | MTC EN 10204 3.1 • Chemical/Mechanical Reports • NDT Reports |
| Key Grade Benefits | CuNi 90/10: Marine & seawater lines • CuNi 70/30: Higher corrosion resistance • Brass: Good machinability & aesthetics • Bronze: High strength + anti-friction properties |
| Typical Applications | HVAC & AC Tubing • Desalination • Marine Cooling Systems • Heat Exchangers • Chemical Processing • Plumbing • Instrumentation • Decorative & Architectural |
Copper-based alloys are widely used where thermal conductivity, corrosion resistance, smooth internal flow, and clean fluid transfer are essential. CuNi alloys offer unmatched seawater resistance, while Brass and Bronze serve high-machinability and mechanical strength requirements.
🔹 1. HVAC, Refrigeration & Air Conditioning Systems
Copper tubes remain the global standard due to their thermal conductivity and ease of bending.
Applications:
Best Grades: Copper (B68) • CuNi 90/10 (high corrosion exposure)
🔹 2. Heat Exchangers & Condensers
Corrosion resistance + smooth ID makes these alloys perfect for heat transfer.
Used In:
Recommended: CuNi 70/30 • Brass • Admiralty Brass
🔹 3. Marine & Desalination Systems
CuNi grades are the global standard for seawater handling.
Applications:
Best Grades: CuNi 90/10 • CuNi 70/30
🔹 4. Chemical & Process Industries
Copper alloys deliver stability in mild chemicals and low-pressure applications.
Applications:
Best Grades: Bronze • Brass (C26000/C27200)
🔹 5. Instrumentation & Plumbing
Preferred for their formability, clean flow path and durability.
Applications:
Recommended: Brass Tubes
🔹 6. Architectural & Decorative Engineering
Brass & Bronze provide a premium aesthetic appeal.
Used For:
Best Grades: Brass • Bronze
| Application | Recommended Grade | Why |
|---|---|---|
| HVAC/AC & refrigeration | Pure Copper (B68) | High thermal conductivity |
| Seawater cooling & desalination | CuNi 90/10 / CuNi 70/30 | Strong seawater corrosion resistance |
| Heat exchangers & industrial condensers | CuNi 70/30 / Admiralty Brass | Better strength in fluid transfer |
| Instrumentation lines | Brass C26000 / C27200 | Smooth ID, easy bending |
| Wear-resistant components | Bronze | High strength + anti-friction |
| Premium architectural use | Brass / Bronze | Aesthetic finish & formability |
| Alloy Type | OD Range | WT Range | Typical Use |
|---|---|---|---|
| Copper (B68) | 3 – 100 mm | 0.5 – 5 mm | HVAC, refrigeration, plumbing |
| CuNi 90/10 / 70/30 | 6 – 168 mm | 1 – 10 mm | Marine, desalination, condensers |
| Brass Tubes | 6 – 120 mm | 0.6 – 6 mm | Decorative, instrumentation |
| Bronze Tubes | 8 – 140 mm | 1 – 8 mm | Wear parts, marine equipment |
(Custom OD/WT, U-bent, coils available.)
(Prices vary by OD, WT, temper & Cu content.)
| Grade | Price Range (₹/kg) | Notes |
|---|---|---|
| Copper Tubes (B68) | ₹850 – ₹1,200 | HVAC & AC grade |
| CuNi 90/10 | ₹1,200 – ₹1,650 | Marine-grade alloy |
| CuNi 70/30 | ₹1,450 – ₹1,900 | Higher seawater resistance |
| Brass Tubes | ₹550 – ₹850 | Instrumentation & decorative |
| Bronze Tubes | ₹700 – ₹1,100 | High-strength alloy |
Standard Tests
Special Tests for Copper & CuNi Tubes
Documentation Supplied
Inox Steel India is a trusted supplier of high-quality copper, brass and bronze seamless tubes for HVAC, marine, heat exchanger, desalination, and engineering applications. Our tubes are manufactured with strict compliance to ASTM B68, B111, B135, B359, ensuring consistent quality, smooth internal surfaces, and long-term reliability.
✔ What Makes Our Non-Ferrous Tubes Superior
We support OEMs, EPC contractors and marine engineering firms with quick delivery, technical guidance, and custom manufacturing options.
| Industry | Applications |
|---|---|
| HVAC & Refrigeration | AC lines, condensers, coils |
| Marine Engineering | Seawater cooling, brine lines, ship components |
| Desalination Plants | MSF, MED, RO systems |
| Heat Exchanger Manufacturers | Tube bundles, chiller systems |
| Instrumentation & Gas Lines | Pressure lines, control tubing |
| Plumbing & Sanitary Fittings | Premium plumbing applications |
| Architectural & Decorative | Railings, fixtures, furniture, design elements |
| Automotive & Engineering | Bushings, bearings, anti-friction components |
Nickel alloys play a mission-critical role in preventing corrosion failures and maximizing life-cycle performance.
Our non-ferrous seamless tubes are exported to 45+ countries, packed for long-distance, moisture-sensitive, and seawater-related applications.
Export Packaging Includes:
Major Export Regions:
UAE • Saudi Arabia • Qatar • Kuwait • Oman
Singapore • Malaysia • Indonesia
Europe • Turkey • Africa
USA • South America
We assist engineers with:
✔ Selection of copper, CuNi, brass or bronze grades
✔ Marine & desalination service recommendations
✔ HVAC & refrigeration tube sizing
✔ Heat exchanger tube bundle support
✔ Project pricing & urgent material dispatch
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Yes — ASTM B68 copper tubes are the global standard for AC, refrigeration and HVAC systems.
Yes. CuNi and Brass tubes are widely used in condenser and heat exchanger applications due to their smooth ID and corrosion resistance.
Yes — coil form tubes for refrigeration, HVAC and instrumentation are available.
MTC 3.1, Chemical/Mechanical reports, Conductivity tests, NDT reports, and heat treatment charts.
Inox Steel India supplies Copper, Brass & Bronze Seamless Tubes in CuNi 90/10, CuNi 70/30, Brass and Bronze as per ASTM B68/B111. Ideal for HVAC, marine, heat exchangers and instrumentation applications. High thermal conductivity and corrosion resistance with MTC 3.1.