Custom UNS N04400 Nickel Copper Alloy Pipe Spools
As a professional nickel alloy pipe spools supplier, we produce high quality custom UNS N04400 (Alloy 400 / W.Nr. 2.4360) nickel copper alloy pipe spools.
Geade N04400 is a nickel-copper alloy. It contains about 30% copper and 70% nickel. The combination of these two components gives alloy 400 excellent corrosion resistance. This corrosion resistance offers unique advantages in flowing seawater.
The 400 nickel copper alloy pipe spool is a kind of pipe fittings manufactured by forming 400 welded pipes and fittings. We manufacture N04400 pipe spool strictly according to ASTM standard.
Our factories and fabrication facilities are filled with highly skilled craftsmen, pipe fitters, pipe fabricators, pipe welders with excellent safety and quality performance records. We take great pride in not only meeting, but exceeding our customers’ expectations in all areas, including performance, design, logistics, schedule, delivery and cost.

Your Trusted Custom UNS N04400 Nickel Copper Alloy Pipe Spools Manufacturer In China
Seather specializes in the manufacturing of nickel alloy and custom pipes spools products for a wide range of industries, including aerospace, petrochemical, power generation, marine, chemical processing and many others.
Seather’s products are known for their superior strength, durability, and resistance to corrosion, making them ideal for use in demanding and harsh environments.
Seather provides a complete range of services, from consultations and analysis to design, quality assurance, and global logistics. The company’s experienced team of engineers and technicians work closely with customers to understand their needs and provide customized solutions to meet their unique requirements.
Whether it’s a simple fabrication project or a complex multi-phase project, Seather has the expertise and experience to deliver quality results.
If you want to purchase custom 316L stainless steel flanged spooled pipes, why not contact us here for saving your time and money?
Custom UNS N04400 Nickel Copper Alloy Pipe Spools Specifications
Product Name | Custom UNS N04400 Nickel Copper Alloy Pipe Spools |
Raw Materials | Alloy 400 (UNS N04400 / W.Nr. 2.4360) |
Size | 114mm to 2500mm Diameter (Seamless & Welded, Fabricated), Wall Thickness: 10s/3 mm to XXS/70 mm; Customized or according to your drawing |
Samples | Sample available |
Tolerance | +/-5mm to +/-0.005mm |
Testing Equipment | CMM; Tool microscope; multi-joint arm; Automatic height gauge; Manual height gauge; Dial gauge; Marble platform; Roughness measurement |
Logo | Custom logo available |
Surface Treatment | Anodizing, Passivation, Polishing, Plating, Painting, Black Oxide, Powder Coating, Brushing, Heat Treatment, Surface Phosphating, Hot Dip Galvanizing, More Surface Treatment, etc. |
Color | Silver, black, gold, red, green, blue, purple, etc |
File Formats | UG, SolidWorks, Pro/E, AutoCAD (DXF, DWG), PDF, TIF, JPG, etc |
Services | OEM/ODM, Engineering&Design Consulting, Assembly, Finishing, Materials Sourcing, Custom Packaging Services, etc |
Quality System | ISO9001, SGS, TUV |
Custom UNS N04400 Nickel Copper Alloy Pipe Spools Chemical Composition
Grade | % | Ni | Cu | Fe | C | Mn | Si | S |
Alloy 400/UNS N04400 | Min | Bal | 28 | |||||
Max | 34 | 2.5 | 0.3 | 2 | 0.5 | 0.024 |


Custom UNS N04400 Nickel Copper Alloy Pipe Spools Applications & Usages
Packed columns
Pressure vessels and reactors
Brine heaters
Heat exchangers
Salt production equipment
Pump and valve components
Pipe work and pipe spools
Custom UNS N04400 Nickel Copper Alloy Pipe Spools Production Process
The production of custom spooled pipes involves several precise steps to ensure high quality, durability, and corrosion resistance. Below is a step-by-step breakdown of the process:
1. Material Selection & Inspection
Raw Material: pipes and fittings are sourced according to customer specifications.
Quality Check: The materials undergo chemical composition and mechanical property testing to ensure compliance with ASTM, or other relevant standards.
2. Cutting & Preparation
Pipes are cut to length using band saws, plasma cutters, or laser cutters, ensuring precision.
Edge preparation is performed to ensure smooth welding and proper flange fitting.
3. Flange Attachment & Welding
Flange Positioning: Stainless steel flanges (e.g., slip-on, weld neck, lap joint, or blind) are aligned with the pipe ends.
Welding Process:
TIG (GTAW) or MIG (GMAW) welding is commonly used for superior corrosion resistance.
Full penetration welds are applied to ensure structural integrity.
If required, purging with argon gas is used to prevent oxidation inside the pipe.
4. Post-Weld Treatment
Pickling & Passivation: Removes weld discoloration and restores the protective chromium oxide layer.
Solution Annealing (if needed): Enhances corrosion resistance and mechanical properties.
5. Dimensional & Non-Destructive Testing (NDT)
Dimensional Inspection: Ensures pipe length, flange alignment, and tolerances are within specification.
Hydrostatic Testing: Pipes are tested under pressure to check for leaks.
X-ray (Radiographic) or Ultrasonic Testing: Detects internal weld defects.
Dye Penetrant Test (DPT): Identifies surface cracks.
6. Surface Finishing & Coating (Optional)
Bead blasting or mechanical polishing for a smooth finish.
Electropolishing for ultra-clean applications (e.g., food & pharma industries).
Epoxy or anti-corrosion coatings for harsh environments.
7. Marking & Documentation
Pipes are laser-etched or stamped with heat number, material grade, size, and standard compliance.
A mill test certificate (MTC) is provided for material traceability.
8. Packaging & Delivery
Flanged pipes are protected with plastic caps and packed using wooden crates or pallets for safe transportation.
If required, pipes are pre-assembled with gaskets and bolts for easier installation at the site.

Your Reliable Custom UNS N04400 Nickel Copper Alloy Pipe Spools Manufacturer In China
Custom UNS N04400 Nickel Copper Alloy Pipe Spools: The Ultimate Guide
When you choose to buy Custom UNS N04400 Nickel Copper Alloy Pipe Spools, there have some important points we need to know before we get started.
What are Custom UNS N04400 Nickel Copper Alloy Pipe Spools?
As a professional nickel alloy pipe spools supplier, we produce high quality custom UNS N04400 (Alloy 400 / W.Nr. 2.4360) nickel copper alloy pipe spools.
Geade N04400 is a nickel-copper alloy. It contains about 30% copper and 70% nickel. The combination of these two components gives alloy 400 excellent corrosion resistance. This corrosion resistance offers unique advantages in flowing seawater.
The 400 nickel copper alloy pipe spool is a kind of pipe fittings manufactured by forming 400 welded pipes and fittings. We manufacture N04400 pipe spool strictly according to ASTM standard.
Custom UNS N04400 Nickel Copper Alloy Pipe Spools standards comparison table
STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
Alloy 400 | 2.4630 | N04400 | – | – | – | – | – | – |
Features of Custom UNS N04400 Nickel Copper Alloy Pipe Spools
The alloy 400 exhibits resistance to corrosion by many reducing media. It is also generally more resistant to attack by oxidizing media than higher copper alloys. This versatility makes alloy 400 suitable for service in a variety of environments.
Alloy 400 is widely used in marine applications. While alloy 400 products exhibit very low corrosion rates in flowing seawater, stagnant conditions have been shown to induce crevice and pitting corrosion. Alloy 400 is also resistant to stress corrosion cracking and pitting in most fresh and industrial waters.

Looking For A Trust Custom UNS N04400 Nickel Copper Alloy Pipe Spools Manufacturer?
Contact us today and we’ll put together a quote tailored to your needs.