01
Nickel Seamless Pipe
Hot-finished or cold-drawn pipe for process lines and caustic transfer duty.
Request Availability →Nickel 200 / 201 Pipe and Tube
Seamless and welded tube in both carbon grades, ordered to ASTM B161, B163, and B725.
Two Grades in One Order
First, N02200 and N02201 tube ship together, so a project splits hot and cold duty lines under one certificate set.
Condenser Tube Covered
B163 heat-exchanger tube arrives with the flare and eddy-current testing that exchanger bundles demand.
Wall and Bore Control
Drawn tube holds wall tolerance and internal cleanliness for instruments, capillary lines, and steam tracing.
PRODUCT OVERVIEW
About Nickel 200 / 201 Pipe and Tube
Nickel 200 / 201 pipe and tube come in two commercially pure nickel grades. UNS N02200 carries up to 0.15% carbon, and UNS N02201 holds the same element to 0.02%.
In addition, both grades follow one composition table across the B161, B163, B725, and B730 standards. The Nickel 200 / 201 material page holds the full grade data, and Nickel 200 / 201 Bar and Rod plus Nickel 200 / 201 Plate and Sheet cover the other two forms.
Tubular work splits the grades on temperature rather than on corrosion. Above 315 °C, a caustic or steam line needs grade 201, because carbon leaves solution as graphite in grade 200 over time. Therefore, we confirm the service condition before quoting a wall thickness.
Southerly Alloy works as a professional supplier and exporter for both grades in tubular form. One contact carries the enquiry from the first technical question through to the shipping documents.
PRODUCT FEATURES
Key Features of Nickel 200 / 201 Pipe and Tube
Nickel 200 and Nickel 201 pipe and tube covers two duties at once, since these grades resist caustic and reducing media and still conduct heat and current. Steam, water, and process streams carry the low-carbon grade above 315 °C, where the standard grade faces graphitization. Southerly Alloy works as a professional supplier and exporter for both grades in tubular form, quoted to ASTM B161, B163, B725, and B730 with EN 10204 3.1 documentation.
Nickel 200 / Nickel 201
Caustic and Alkali Duty
Sodium hydroxide and potassium hydroxide at every concentration sit inside the envelope, including molten alkali salt.
01
No Chloride Cracking
Also, neutral and alkaline salt solutions raise no stress-corrosion cracking, so cooling water and brine lines stay sound.
02
Heat and Current Together
Thermal conductivity near 70 W/m·K and resistivity near 0.09 µΩ·m let one tube carry both duties.
03
Grade 201 Above the Threshold
The 0.02% carbon cap removes graphitization, so steam and hot process lines reach about 677 °C.
04
Cold-Formed U-Bends
Similarly, either grade bends and flares without intermediate annealing, which suits exchanger tube bundles.
05
Welded Routes Available
B725 pipe and B730 heat-exchanger tube carry the same chemistry where a welded route fits the duty.
06
Wall and Bore Consistency
In fact, drawn and pilgered tube holds wall tolerance for instruments and capillary runs.
07
Service Limits Stated First
Wet hydrofluoric acid and oxidizing acids fall outside the envelope, and grade 201 meets sulfide attack above 315 °C.
08
WHY CHOOSE US
Why Choose Nickel 200 / Nickel 201
A tube order runs on four practical points. They cover the range we quote, the paperwork that travels with the material, inspection arrangements, and export handling.
01
Tube and Pipe on One Enquiry
Seamless pipe, exchanger tube, and welded product all quote together, so one enquiry covers a full bundle.
02
Certificates Before Dispatch
EN 10204 3.1 paperwork, heat numbers, and test records sit with the quotation rather than arriving later.
03
Inspection to Your Witness Point
We book hydrostatic, eddy-current, or third-party inspection at the stage your project names.
04
Export Packing Suited to Sea Freight
Tube leaves in wooden cases or end-capped bundles, with marking that matches the packing list.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Tube production follows a fixed route from melt to final test. However, the ordered grade and standard decide which steps apply, because a welded route skips the piercing stage.
01
Charge Weighing
Nickel cathode and controlled additions are weighed to the N02200 or N02201 chemistry, and we hold carbon to the ordered limit.
02
Melt and Cast
The charge melts and casts into electrodes or ingots under a controlled atmosphere that limits gas pickup.
03
Hot Piercing and Extrusion
A pierced shell or extruded hollow forms the tube blank, refining the cast structure as the wall forms.
04
Cold Pilgering and Drawing
Cold reduction brings the wall and outside diameter to the ordered tolerance and surface.
05
Solution Annealing
Heat treatment restores ductility and sets the condition named on the order, whether annealed or stress-relieved.
06
Straightening and Cutting
The line straightens, squares, and cuts tube to the ordered length, or leaves random lengths.
07
Pressure and Eddy-Current Testing
Each length takes a hydrostatic test at the ordered pressure, or an approved electric test.
08
Cleaning, Marking, and Packing
We mark, cap, and case every heat for shipment against the packing list.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Seamless and welded routes cover the standard range and made-to-order sizes. Both grades run against one schedule, so a mixed order leaves as a single consignment. Therefore, we settle wall tolerance and length before production starts.
20,000+ m²
Production Area
Melting, extrusion, drawing, and inspection halls sit on one site.
50+
Production Machines
Pilger mills, draw benches, and finishing units serve the tube line.
600 Tons
Monthly Capacity
Nickel and nickel alloy tubular output in stock and custom sizes.
30+
Technical Engineers
Metallurgists match grade and condition to the intended duty.
2
Grades on One Schedule
N02200 and N02201 work to the same delivery dates.
25 Days
Made-to-Order Window
Custom tube runs about that long after confirmation.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Testing closes on the heat before any length leaves the yard. Consequently, our inspection checks chemistry, mechanical properties, and dimensions against the purchase specification ahead of release.
01
Heat Verification
The laboratory confirms the N02200 or N02201 balance before the heat enters the tube route.
02
Wall and Diameter Inspection
Also, we measure outside diameter, wall thickness, and length against the ordered tolerance.
03
Pressure and Flare Testing
Every length takes a hydrostatic test at the ordered pressure, and exchanger tube also takes a flare.
04
Documentation and Traceability
Certificates, heat numbers, and PMI results travel with each length.
PRODUCT FORMS
Available Product Forms
Southerly Alloy supplies Nickel 200 / Nickel 201in multiple product forms according to application, dimensions and applicable international standards.
02
Nickel Heat-Exchanger Tube
Moreover, this route covers condenser and exchanger tube to ASTM B163, supplied straight or U-bent.
Request Availability →
03
Nickel Welded Pipe
Welded pipe to ASTM B725 for lines where a welded route suits the wall and size.
Request Availability →
04
Nickel Welded Exchanger Tube
Welded tube to ASTM B730 for exchanger bundles in alkaline service.
Request Availability →
05
Capillary and Instrument Tube
Small-bore tube with a controlled wall for gauges and instrument lines.
Request Availability →
06
Steam Tracing Tube
Annealed tube for tracing lines that run above the graphitization threshold.
Request Availability →
07
Coiled Tube
Long-length coil for fabrication runs that call for few joints.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Two duties bring buyers to these grades. Caustic and reducing media attack ordinary steel, and the same tube carries heat or current through the wall. Typical work sits in chlor-alkali plants, heat exchangers, and electrical assemblies.
Discuss Your Application →
01
Caustic Evaporator Bundles
First, exchanger tube serves sodium hydroxide concentration trains.
02
Chlor-Alkali Cell Hardware
Current-carrying tube and fittings sit in cell rooms.
03
Heat Exchangers and Condensers
Additionally, tube bundles handle alkaline and neutral cooling water.
04
Steam and Process Lines
Tracing and transfer lines run above 315 °C on grade 201.
05
Electroplating Assemblies
Anode baskets and conductive tube serve plating lines.
06
Food and Pharmaceutical Tubing
Product-contact tube needs a clean nickel surface.
07
Fatty Acid Process Lines
Tube handles stearic and oleic acid streams.
08
Battery and Electronic Parts
Small-bore tube serves terminals and conductive hardware.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
Limits follow the composition table shared by B161, B163, B725, and B730. Additionally, the nickel figure comes by difference and includes cobalt. The purchase specification and its mill certificate govern final acceptance.
| Element | Nickel 200 (UNS N02200) | Nickel 201 (UNS N02201) |
|---|---|---|
| Nickel (Ni), min. | 99.0% | 99.0% |
| Copper (Cu), max. | 0.25% | 0.25% |
| Iron (Fe), max. | 0.40% | 0.40% |
| Manganese (Mn), max. | 0.35% | 0.35% |
| Carbon (C), max. | 0.15% | 0.02% |
| Silicon (Si), max. | 0.35% | 0.35% |
| Sulfur (S), max. | 0.01% | 0.01% |
Mechanical Properties
Values below are acceptance minimums from each standard, in inch-pound and metric units. Note that B161 and B163 do not share one elongation figure, so the table lists them apart.
| Standard / Grade / Condition | Section | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|---|
| B161 seamless, Nickel 200, annealed | Outside dia. ≤ 127 mm (5 in.) | ≥55 ksi (380 MPa) | ≥15 ksi (105 MPa) | 35% |
| B161 seamless, Nickel 200, annealed | Outside dia. > 127 mm (5 in.) | ≥55 ksi (380 MPa) | ≥12 ksi (80 MPa) | 40% |
| B161 seamless, Nickel 200, stress-relieved | All sizes | ≥65 ksi (450 MPa) | ≥40 ksi (275 MPa) | 15% |
| B161 seamless, Nickel 201, annealed | Outside dia. ≤ 127 mm (5 in.) | ≥50 ksi (345 MPa) | ≥12 ksi (80 MPa) | 35% |
| B161 seamless, Nickel 201, annealed | Outside dia. > 127 mm (5 in.) | ≥50 ksi (345 MPa) | ≥10 ksi (70 MPa) | 40% |
| B161 seamless, Nickel 201, stress-relieved | All sizes | ≥60 ksi (415 MPa) | ≥30 ksi (205 MPa) | 15% |
| B163 exchanger tube, Nickel 200, annealed | All sizes | ≥55 ksi (379 MPa) | ≥15 ksi (103 MPa) | 40% |
| B163 exchanger tube, Nickel 200, stress-relieved | All sizes | ≥65 ksi (448 MPa) | ≥40 ksi (276 MPa) | 15% |
| B161 converter tube, Nickel 200, full hard | Outside dia. ≤ 31.8 mm (1.25 in.) | ≥95 ksi (655 MPa) | — | 4% |
Annealed tube carries a hardness limit of 70 HRB maximum. The converter sizes above apply to thin-wall, small-diameter tube alone, and neither B161 nor B163 covers tube below 3.2 mm outside diameter with a wall under 0.38 mm.
Physical Properties
Room-temperature values for annealed material, listed for design calculations rather than acceptance testing. Thermal conductivity and electrical resistivity separate the two grades most clearly.
| Property | Nickel 200 (N02200) | Nickel 201 (N02201) |
|---|---|---|
| Density | Approx. 8.89 g/cm³ | Approx. 8.89 g/cm³ |
| Melting range | Approx. 1435–1446 °C | Approx. 1435–1446 °C |
| Specific heat at 20 °C | Approx. 456 J/kg·K | Approx. 456 J/kg·K |
| Curie temperature | Approx. 360 °C (680 °F) | Approx. 360 °C (680 °F) |
| Modulus of elasticity | Approx. 205 GPa | Approx. 207 GPa |
| Thermal conductivity at 20 °C | Approx. 70.3 W/m·K | Approx. 79.3 W/m·K |
| Electrical resistivity at 20 °C | Approx. 0.096 µΩ·m | Approx. 0.085 µΩ·m |
| Thermal expansion, 20–100 °C | Approx. 13.3 µm/m·K | Approx. 13.2 µm/m·K |
| Poisson's ratio | Approx. 0.29 | Approx. 0.29 |
| Magnetic behaviour | Ferromagnetic at room temperature | Ferromagnetic at room temperature |
Standards
Four ASTM standards cover tubular product for these grades, split by route and duty. However, the European and ISO designations below serve cross-reference, and ASTM International standards named on the order govern acceptance.
| Standard / Designation | Scope |
|---|---|
| ASTM B161 / ASME SB161 | Seamless pipe and tube — UNS N02200 and UNS N02201 |
| ASTM B163 / ASME SB163 | Seamless condenser and heat-exchanger tube |
| ASTM B725 / ASME SB725 | Welded pipe |
| ASTM B730 / ASME SB730 | Welded heat-exchanger tube |
| ASTM B751 / B775 | General requirements for welded nickel pipe and tube |
| ASTM B829 | General requirements for seamless nickel pipe and tube |
| DIN 17751 / ISO 6207 | Nickel seamless pipe and tube |
| BS 3074 (NA12) | Nickel pipe and tube |
| VdTÜV 345 | Wrought nickel — technical delivery conditions |
| JIS G 4902 | Nickel and nickel alloy seamless pipe and tube |
| W.Nr. 2.4066 / 2.4068 | European designations for Nickel 200 and Nickel 201 |
| UNS N02200 / N02201 | Material designations for the two grades |
Dimensions
Ranges below reflect the sizes normally produced to these standards. Availability moves with route, condition, and order quantity; therefore, we confirm each size at quotation.
| Product Form | Outside Diameter | Wall Thickness |
|---|---|---|
| Seamless Pipe | 6–219 mm | 0.5–20 mm |
| Seamless Heat-Exchanger Tube | 10–426 mm | 1.24–40.49 mm |
| Welded Pipe | 6–610 mm | 1.0–20 mm |
| Welded Heat-Exchanger Tube | 10–426 mm | 0.8–6.0 mm |
| Capillary and Instrument Tube | 1.6–6.35 mm | 0.2–1.0 mm |
| U-Bend Tube | 10–51 mm | 0.8–3.0 mm |
Surface Finishes
Finish follows the duty that comes next, whether the tube goes into a bundle, an instrument panel, or a fabrication shop. In addition, the ordered standard decides which finishes each route can deliver.
| Surface Condition | Typical Use |
|---|---|
| Annealed and pickled | Exchanger tube and process pipe for general chemical duty |
| Bright annealed | Instrument, capillary, and semiconductor lines |
| Cold-drawn | Close-tolerance tube for gauges and hydraulic fittings |
| Descaled | Pipe that will be welded or machined further |
| Polished | Product-contact and electrode tube where roughness matters |
| Oiled and capped | Stock lengths held before fabrication |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 7 Simple Steps
One contact carries a tube enquiry from the first question to loading. A quotation states the standard, condition, and test requirements in writing, so nothing rests on a verbal understanding.
1
Send an Enquiry
Give the grade, standard, outside diameter, wall, length, quantity, and delivery condition.
2
Route Review
We confirm whether a seamless or welded route fits the ordered size and duty.
3
Technical Clarification
We record the service temperature, test level, and any third-party witness point.
4
Receive a Quotation
Then price, lead time, and the document list arrive in one reply against the confirmed specification.
5
Order Confirmation
We fix the agreed size, wall tolerance, test level, and delivery terms before material is cut.
6
Production and Testing
The tube takes its working, heat treatment, and final test against the standard named on the order.
7
Shipment and Documents
Certificates, packing list, and export papers travel with the tube.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The B163 bundles arrived with flare test records attached, and the heat numbers matched our exchanger drawings.”
★★★★★
“We ordered both grades on one schedule and had no trouble separating the stress-relieved lengths from the annealed ones at site.”
★★★★★
“The capillary tube held its wall tolerance, so our instrument lines needed no rework after bending.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which standard covers seamless nickel pipe and tube?
ASTM B161 covers seamless pipe and tube in both grades, and ASTM B163 covers condenser and heat-exchanger tube. The two differ in elongation and testing; therefore, we quote the one your duty calls for.
When should I order grade 201 instead of grade 200?
Whenever the tube runs above about 315 °C in continuous service. Steam tracing, hot caustic lines, and exchanger duty above that point need the low-carbon grade.
Does B161 and B163 elongation differ?
Yes. B161 annealed tube at or below 127 mm outside diameter carries 35%, while B163 annealed tube carries 40%. B163 also adds a flare test that B161 does not.
Do welded tube standards apply to these grades?
They do. Also, ASTM B725 covers welded pipe and ASTM B730 covers welded heat-exchanger tube, while B751 and B775 hold the general requirements.
How is tube pressure-tested?
Every length takes a hydrostatic test at the pressure the order names, or an approved electric test where the specification allows a substitution.
What is your MOQ?
Single lengths come from stock for many sizes, and trial quantities are welcome. Also, bundle quantities quote better on both price and freight.
What are your trade terms?
Our quotations usually stand on FOB terms. Additionally, we add EXW or CIF when you prefer one of them, and we name the port at quotation.
What is the lead time?
Confirmed orders on stock lengths move out in 7–15 days. Made-to-order tube runs about 25 days, and we write the date into the order confirmation.
Do you supply EN 10204 3.1 or 3.2 certificates?
Each shipment carries an EN 10204 3.1 certificate, and a 3.2 endorsement with third-party inspection is available on request.
Can you supply U-bent or coiled tube?
Yes. Also, we produce U-bend tube to your bundle drawing, and coiled lengths ship where a fabrication run calls for few joints.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the grade, ASTM standard, outside diameter, wall thickness, length, and test requirements. Price, delivery date, and the document list come back in one message.
Also, seamless and welded routes both stay open for order, and stock lengths cover many common sizes. Therefore, a trial length is a practical way to check wall tolerance before a full order.
