CuNi 90/10 70/30 Nickel Alloy Pipe Copper Soldering Pipe C44300 Seamless Pipe

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: EZS
• Material: Cooper/Copper Nickel
• Surface Treatment: Copper Coated
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Payment: LC Tt
• MOQ: 1000kgs
• Delivery Time: 7-30 Days
• Shipping Method: by Container
• Inspection: SGS,BV,TUV, Ibr,
• Certificate: ISO, Dnv,
• Standard: ASTM B111, En12451, DIN17664/17660/1785, BS 2871,
• Grade: C70600, 70/30,90/10, Alloy 715, Cn102
• Package: by Bundle/Ply-Wood Case
• End Type: Plain Ends, Bevel End, Threaded End
• Aplication 1: Industrial Heating and Drilling
• Aplication 2: Metel Treatment System
• Aplication 3: High Temperature Geberater Tube
• Transport Package: Wooden Case
• Specification: OD: 8-168.3mm, WT: 1-15mm
• Trademark: EZS
• Origin: P. R China
• HS Code: 74112900
• Production Capacity: 300000t/Year

Product Description

ASTM B111/B111M - for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

- Covers seamless copper and copper-alloy tubes for condensers, heat exchangers, and ferrule stock.  
- Includes tubes made from UNS alloys: C10200, C10300, C10800, C12000, C12200, C14200, C19200, C23000, C28000, C44300, C44400, C44500, C60800, C61400, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, and C72200.  
- Available in metric (B111M) or inch-pound (B111) units.

Specification

Orders must specify:  
 - ASTM standard designation (B111 or B111M).

 - Alloy UNS number.  
 - Temper (e.g., annealed, as-drawn).  
 - Dimensions (OD, wall thickness, length).  

 - Quantity (total length or number of pieces).  
- End finish (e.g., plain, beveled).  
- Certification or test report requirements (if needed).  
- Special packaging (if required).

Material Codes (UNS Alloys)

Common alloys include:  
- Oxygen-free copper: C10200, C10800.  
- Phosphorus-deoxidized copper: C12000, C12200.  
- Admiralty brass: C44300, C44400, C44500.  
- Aluminum brass: C68700.  
- Cu-Ni alloys (90-10, 70-30): C70600, C71500.

- Compliance with ASTM, EN, or other international standards as applicable.  
- Third-party inspection (if required by purchaser).  

Conclusion  
EEMUA 234 provides a comprehensive specification for Cu-Ni alloy tubes in offshore environments, ensuring material integrity through strict chemical, mechanical, and inspection criteria. It is widely referenced in the oil & gas, marine, and desalination industries.  

 Material Codes in EEMUA 234 (Latest Version)  

1. Common Copper-Nickel Alloys  
The standard typically includes the following alloys, identified by Unified Numbering System (UNS) and European (EN) designations:  

| Alloy Type | UNS Number | EN Designation | Common Name |   
| 90/10 Cu-Ni | UNS C70600 | CW 352H (EN 12451) | 90% Cu, 10% Ni |  
| 70/30 Cu-Ni | UNS C71500 | CW 354H (EN 12451) | 70% Cu, 30% Ni |  

2. Additional Referenced Standards  
EEMUA 234 may also refer to material specifications from:  
- ASTM B466 / B467 (Seamless & Welded Cu-Ni Tubes)  
- ISO 13388 (Copper & Copper Alloys – Inspection & Testing)  
- EN 12451 (Copper & Cu Alloy Tubes for Heat Exchangers)  

3. Material Condition (Temper)  
- Annealed (O) – Soft condition for forming  
- As-Drawn (H) – Hard temper for higher strength  

4. Traceability & Certification  
- Heat numbers must be provided for material traceability.  
- Certification per EN 10204 3.1 or 3.2 (Inspection Certificates).  

 Key Notes  
- The 90/10 Cu-Ni (C70600) is most common for general seawater service.  
- The 70/30 Cu-Ni (C71500) offers superior corrosion resistance for harsh offshore conditions.

Chemical Composition

- Strict limits on copper, zinc, nickel, iron, lead, and other elements depending on the alloy.  
- Compliance with ASTM E478 or other approved test methods.

Mechanical Properties

- Tensile strength, yield strength, and elongation requirements vary by alloy and temper (e.g., annealed vs. as-drawn).  
- Examples:  
  - C12200 (annealed): Tensile strength ≥ 220 MPa (32 ksi), elongation ≥ 40%.  
  - C71500 (as-drawn): Tensile strength ≥ 485 MPa (70 ksi), elongation ≥ 15%.
 

C44300

CUNI 90/10

C44300

Technical Specifications

(Custom configurations available upon request.)

Alloy	Type	Composition	Main Characteristics	Common Applications
C12200	Phosphorus-Deoxidized Copper	Cu+P (0.015-0.04%)	Excellent Weld-ability, good corrosion resistance, high conductivity	Plumbing, HVAC, piping
C44300	Admiralty Brass	Cu-Zn-Sn + As/Sb	Excellent seawater corrosion resistance, biofouling resistance	Condenser tubes, heat exchangers, marine systems
C61400	Aluminum Bronze	Cu-Al(6-8%)+Fe, Ni	High strength, excellent seawater/erosion resistance, wear-resistant	Marine propellers, pumps, valves, bearings
C63000	Nickel-Aluminum Bronze	Cu-Al-Ni-Fe	Superior corrosion/erosion resistance, high fatigue strength	Aircraft components, heavy-duty marine parts
C68700	Arsenical Aluminum Brass	Cu-Zn-Al-As	Outstanding biofouling/seawater resistance, good formability	Heat exchangers, condensers, desalination plants
C70600	90-10 Copper-Nickel	Cu-Ni(10%)+Fe/Mn	Excellent seawater corrosion resistance, weldability, moderate strength	Marine piping, offshore platforms, condensers
C71500	70-30 Copper-Nickel	Cu-Ni(30%+Fe/Mn	Higher corrosion resistance & strength than C70600, thermal stability	Chemical processing, seawater systems
C93200	High-Lead Tin Bronze	Cu-Sn-Pb	Excellent bearing properties, low friction, machinability	Bushings, bearings, thrust washers
Inconel 625	Nickel-Chromium-Molybdenum	Ni-Cr-Mo-Nb	High strength, oxidation/corrosion resistance (acids/chlorides), fatigue-resistant	Aerospace, chemical procession marine
Hastelloy C276	Nickel-Molybdenum-Chromium	Ni-Mo-Cr-W	Extreme corrosion resistance (HCI,chlorides)stress-corrosion cracking resistant	Chemical reactors,pollution control, oil & gas
Monel 400	Nickel Copper	Ni-Cu(66% Ni,33% Cu)	Excellent resistance to seawater,acids and alkalis, good mechnical strength	Marine engineering, chemical tanks, valves
Incoloy 825	Nickel-Iron-Chromium	Ni-Fe-Cr-Mo-Cu-Ti	Sulfuric/phosphoric acid resistance, high-temperature stability	Chemical processing, acid storage, nuclear
Nickel 200	Pure Nickel	99.6% Ni	Outstanding corrosion resistance(alkalis,salts),high thermal/ conductivity	Chemical equipment, food processing, electronics

Inspection and Testing Requirements

- Hydrostatic or nondestructive (NDT) testing: Each tube must be tested for leaks.  
- Flattening test: For annealed tubes (sample must not crack or split).  
- Flaring test: For certain alloys/tempers.  
- Grain size test: For annealed copper tubes (ASTM E112).  
- Certification: Manufacturer must provide test results certifying compliance.

Production Stage	Process	Description & Key Points
1	Raw Material Preparation	High-purity nickel, chromium, molybdenum, iron, etc. Strict chemical composition control.
2	Melting & Casting	VIM + ESR / VAR melting to ensure purity and uniformity. Cast into round billets.
3	Billet Sawing & Inspection	Cut to fixed length; UT inspection to remove internal defects.
4	Billet Heating	Heating in rotary furnace at 1100–1250°C to improve plasticity.
5	Rotary Piercing	Solid billet pierced into hollow shell using Mannesmann piercing mill.
6	Hot Rolling / Extrusion	Hot rolling or extrusion to reduce wall thickness and form mother tube.
7	Annealing & Pickling	Remove oxide scale; soften material for cold working.
8	Cold Rolling / Pilgering	Precision cold rolling to reach required OD, WT and surface finish.
9	Solution Annealing	Heat treatment at 980–1260°C + rapid cooling to stabilize structure and corrosion resistance.
10	Straightening	Multi-roll straightening to ensure high straightness.
11	Cutting & Deburring	Cut to customer length; deburr both ends.
12	Finishing	Pickling, passivation, polishing or electro-polishing.
13	NDT & Pressure Test	Hydrostatic test, UT, ET, dimensional inspection, mechanical test.
14	Marking & Packing	Mark grade, size, heat number; protect with caps and packaging.

Dimensional Tolerances

- Outside diameter: ±0.1 mm (metric) or ±0.005 in (inch-pound).  
- Wall thickness: ±10% of nominal thickness.  
- Length: ±3 mm for cut lengths.

Company Profile

Certification & Marking

- Each tube must be marked with:  
  - Manufacturer's name or trademark.  
  - Alloy designation.  
  - Temper.  
  - ASTM standard (B111/B111M).  
- Certified test reports available upon request.

FAQ

Q: What's your minimum order quantity?
A: Our minimun quantity is 500 Kg. We also can offer you samples.
Q: What's your delivery time?
A: Our normal delivery time is 7-30 days, and it depends on your quantity and items. Of course, if you need products urgently, we also will consider arranging it firstly.
Q: What's the price of your product?
A: Our prices are based on the material grade, size, quantity and physical performance etc. So if you can offer us the detailed information, then we can give you the best reasonable price. Also, we can do special size and color for customers.
Q: What's your after-sales service?
A: We have two ways to handle claims by replacement and deduction. Of course, if the materialis not good used by wrong parameter from customer, we won't be responsible.
Q: Why do you think I will want to buy from you?
A: We have advantages with 25 years of professional experiences in manufacturing & designing, advanced technology & the first-class equipment, perfect logistics management, high-quality after-sales service and competitive price.