Description of Zirconium 702 Pipe
Zirconium 702 seamless pipe is a corrosion-resistant pipe made of high-purity zirconium alloy (UNS R60702). It has excellent resistance to chemical erosion and is widely used in harsh environments such as the chemical industry, nuclear power, medical treatment, and marine engineering.
Features of Zirconium 702 pipe
- High heat transfer efficiency
- Very low thermal expansion
- Immunity to stress corrosion cracking (SCC).
- High resistance to localized (pitting and crevice) forms of corrosion
- Very good corrosion resistance in most organic acids
- Exceptional corrosion resistance in mineral acids
- Good corrosion resistance in strong alkalis
Applications of Zirconium 702 Pipe
Chemical Processing: Used for equipment like heat exchangers, reactors, and storage tanks in chemical industries.
Nuclear Reactors: Utilized as cladding for fuel rods due to its low neutron absorption.
Medical Applications: Used in medical implants and devices due to its biocompatibility.
Marine Applications: Suitable for seawater systems and marine hardware because of its resistance to saltwater corrosion.
Chemical Composition
|
Zirconium Grade |
Zr 702 |
Zr 704 |
Zr705 |
|
UNS |
R60702 |
R60704 |
R60705 |
|
Zirconium + Hafnium (min) |
99.2 |
97.5 |
95.5 |
|
Hafnium (max |
4.5 |
4.5 |
4.5 |
|
Iron + Chromium |
0.2 max |
0.2-0.4 |
0.2 max |
|
Tin |
- |
1.0-2.0 |
- |
|
Hydrogen (max) |
0.005 |
0.005 |
0.005 |
|
Nitrogen (max) |
0.025 |
0.025 |
0.025 |
|
Carbon (max) |
0.05 |
0.05 |
0.05 |
|
Niobium |
- |
- |
2.0-3.0 |
|
Oxygen (max) |
0.16 |
0.18 |
0.18 |
Tube Sizes
|
Diameter |
Wall Thickness |
|||||||
|
0.51 mm |
0.71 mm |
0.89 mm |
1.24mm |
1.65mm |
2.11mm |
2.77mm |
||
|
mm |
in |
kg/mtr |
kg/mtr |
kg/mtr |
kg/mtr |
kg/mtr |
kg/mtr |
kg/mtr |
|
6.35 |
0.250 |
0.061 |
0.082 |
0.099 |
0.13 |
0.159 |
|
|
|
7.94 |
0.313 |
0.078 |
0.105 |
0.128 |
0.17 |
0.212 |
|
|
|
9.52 |
0.375 |
0.094 |
0.128 |
0.157 |
0.21 |
0.266 |
|
|
|
12.7 |
0.500 |
0.127 |
0.174 |
0.215 |
0.291 |
0.373 |
0.457 |
|
|
15.87 |
0.625 |
0.16 |
0.22 |
0.273 |
0.371 |
0.48 |
0.594 |
|
|
19.05 |
0.750 |
0.193 |
0.266 |
0.331 |
0.452 |
0.587 |
0.773 |
0.922 |
|
22.22 |
0.875 |
0.226 |
0.312 |
0.388 |
0.532 |
0.694 |
0.867 |
1.101 |
|
25.4 |
1.00 |
0.26 |
0.359 |
0.446 |
0.613 |
0.802 |
1.005 |
1.282 |
|
31.75 |
1.250 |
0.326 |
0.451 |
0.562 |
0.774 |
1.016 |
1.279 |
1.642 |
|
38.1 |
1.500 |
- |
0.543 |
0.677 |
0.935 |
1.23 |
1.553 |
2.002 |
Pipe Sizes
|
Diameter |
Wall Thickness |
|||||||
|
Schd 5S |
Schd 10 S |
Schd 40S |
||||||
|
Size |
Weight |
Size |
Weight |
Size |
Weight |
|||
|
mm |
in |
NPS |
mm |
kg/mtr |
mm |
kg/mtr |
mm |
kg/mtr |
|
10.29 |
0.410 |
1/8 |
- |
- |
1.24 |
0.23 |
1.73 |
0.303 |
|
13.72 |
0.540 |
1/4 |
- |
- |
1.65 |
0.407 |
2.24 |
0.526 |
|
17.15 |
0.680 |
3/8 |
- |
- |
1.65 |
0.523 |
2.31 |
0.701 |
|
21.34 |
0.840 |
1/2 |
1.65 |
0.665 |
2.11 |
0.83 |
2.77 |
1.052 |
|
26.67 |
1.050 |
3/4 |
1.65 |
0.844 |
2.11 |
1.06 |
2.87 |
1.397 |
|
33.4 |
1.320 |
1 |
1.65 |
1.072 |
2.77 |
1.735 |
3.38 |
2.075 |
|
42.16 |
1.660 |
1.1/4 |
1.65 |
1.367 |
2.77 |
2.232 |
3.56 |
2.811 |
Testing and Quality Control of Zirconium 702 Pipe
FAQ for Zirconium 702 Pipe
What is the MOQ?
A: Depends on quantity, generally, no MOQ limit.
How to pay for it?
A: A bank transfer (T/T) will be acceptable.
What is the delivery time?
A: around 7-20 days, which depends on the quantity and production.
What is the package?
A: carton case or plywood case.
What is the lead time?
A: From the order placed to cargo receiving will take around 10-25 days.
What is the delivery method?
A: Generally, we send cargo by UPS, DHL, or FedEx. Additionally, we can ship by sea to a seaport or by air to the nearest airport.
What is Zr702?
Zr702 is a high-purity zirconium alloy material with excellent corrosion resistance, especially suitable for high-temperature, high-pressure, and corrosive environments.
Why does the nuclear industry choose Zr702 seamless tubes?
Low neutron absorption, ideal for nuclear reactor environments
Hydrogen embrittlement resistance for extended service life
Radiation resistance maintains long-term stability
Rigorously validated for high-temperature/pressure water applications
Key performance characteristics?
High strength, resistant to high temperature/pressure
Superior corrosion resistance, particularly in acidic/alkaline environments
Excellent machinability and weldability
Main application fields?
Nuclear industry: Fuel cladding, pressure tubes
Chemical processing: Heat exchangers, reactors
Pharmaceutical: High-purity fluid transfer piping
Desalination: Evaporators, heater tubes
Advantages over stainless steel?
Better corrosion resistance, especially in chloride environments
More suitable for high temperature/pressure with superior stability
Longer service life with lower maintenance costs
Standard specifications?
Outer diameter: 6-150mm (customizable)
Wall thickness: 0.5-15mm
Length: Up to 12m (custom cutting available)
Surface treatment options?
Annealed: Standard industrial finish
Pickled: Matte anti-corrosion surface
Electropolished: High-purity smooth finish
Quality certifications & testing?
Complies with international standards (e.g., ASTM)
100% non-destructive testing (UT+ET)
Full material traceability documentation
Technical support?
We provide:
Welding procedure guidance
Failure analysis services
Custom alloy optimization solutions
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