Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools
As a professional stainless steel pipe spools supplier, we produce high quality custom super duplex stainless steel 2507 UNS S32750 prefabricated pipe spools.
UNS S32750 (2507) is a duplex stainless steel that combines many excellent features of ferritic and austenitic steels. Due to its high chromium and molybdenum content, it embodies excellent resistance to pitting corrosion, crevice corrosion and uniform corrosion. The two-phase microstructure ensures that the steel has high resistance to stress corrosion cracking and high mechanical strength. Besides, it features strong resistance to chloride pitting, high thermal conductivity and low coefficient of thermal expansion.
In comparison with S32205 duplex steel, S32750 features higher strength and corrosion resistance. Compared to 904L pipe spool, it is more resistant to corrosion caused by dilute sulfuric acid mixed with chloride ions. In contrast with austenitic stainless steel, it features higher yield strength and lower ductility.
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 Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated 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 Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools Specifications
| Product Name | Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools |
| Raw Materials | UNS S32750/2507/W.Nr. 1.4410 |
| 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 Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools Chemical Composition
The chemical components of grade 2507 super stainless steel is summarized in the following table:
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| S32750 | ASTM A240 | ≤0.03 | ≤0.80 | ≤1.20 | ≤0.035 | ≤0.020 | 24.00-26.00 | 6.00-8.00 | 3-5 |
Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools Applications & Usages
1) Desalted plants, high pressure RO plants and submarine pipelines;
2) Offshore platforms, heat exchangers, underwater equipment, firefighting equipment and seawater treatment equipment;
3) Chemical processing industry, utensils and pipeline industry;
4) Mechanical parts (high-sAtrength, corrosion-resistant parts);
5) Oil and gas industry equipment;
6) Corrosion resistant parts of chemical tankers;
7) Energy industry FGD system, industrial scrubbing system, absorption tower;
8) Refining, fertilizer and paper;
Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated 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 Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools Manufacturer In China
Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools: The Ultimate Guide
When you choose to buy Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools, there have some important points we need to know before we get started.
What are Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools?
As a professional stainless steel pipe spools supplier, we produce high quality custom super duplex stainless steel 2507 UNS S32750 prefabricated pipe spools.
UNS S32750 (2507) is a duplex stainless steel that combines many excellent features of ferritic and austenitic steels. Due to its high chromium and molybdenum content, it embodies excellent resistance to pitting corrosion, crevice corrosion and uniform corrosion. The two-phase microstructure ensures that the steel has high resistance to stress corrosion cracking and high mechanical strength. Besides, it features strong resistance to chloride pitting, high thermal conductivity and low coefficient of thermal expansion.
In comparison with S32205 duplex steel, S32750 features higher strength and corrosion resistance. Compared to 904L pipe spool, it is more resistant to corrosion caused by dilute sulfuric acid mixed with chloride ions. In contrast with austenitic stainless steel, it features higher yield strength and lower ductility.
Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools standards comparison table
| ASTM/AISI | WERKSTOFF NR. | UNS | GOST | GB | JIS | DIN | EN | OR |
| S32750 (2507) | 1.4410 | S32750 | – | 022Cr25Ni7Mo4N | – | – | – | – |
Features of Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools
S32750 pipe spool features good weldability. Many common stainless steel forming methods are also suitable for S32750. It can be welded by a series of methods such as SMAW, GTAW, PAW, FCW, or SAW. When soldering S32750, it is advisable to use 2507/P100 metal, which will form a suitable two-phase structure.
Looking For A Trust Custom Super Duplex Stainless Steel 2507 UNS S32750 Prefabricated Pipe Spools Manufacturer？
Contact us today and we’ll put together a quote tailored to your needs.
