Description
Product Specifications and Technical Data
An engineered stainless steel known for its high yield strength & decent corrosion resistance
- ✓High Strength – About 2x stronger yield than 316 stainless steel
- ✓Super Duplex – Decent general corrosion & cracking resistance
- ✓Duplex Grades: Duplex 2205, Super Duplex 2507, Zeron 100
- ✓Threaded flange features and benefits
- ✓Datasheet for Super Duplex 2507
- ✓Datasheet for Duplex 2205
Duplex 2205 and Super Duplex 2507 stainless steel threaded flanges are characterized by their high yield strength, which is twice that of the annealed yield strength of typical austenitic stainless steels, like 304 and 316 stainless steel threaded flanges. Because of this, Duplex 2205 and Super Duplex 2507 steel are some of the most common grades of duplex used for threaded flanges with Super Duplex 2507 threaded flanges being the more corrosion resistant grade of the two.
Super Duplex 2507 threaded flanges improved corrosion resistance lends itself well too applications prone to stress-corrosion cracking, crevice corrosion, pitting, erosion and general corrosion. Because of the properties of Duplex and Super Duplex stainless steel threaded flanges are often used in chemical processing, petrochemicals, power industry and seawater equipment.
Usage of both Duplex and Super Duplex stainless steel should be limited to temperatures below 570° F as extended elevated temperature exposure can embrittle this material.
The most common grades of Duplex flanges are Duplex 2205 and Super Duplex 2507. Gain more insight on these two grades by accessing our Duplex 2205 and Super Duplex 2507 overviews or by contacting our engineering experts.
Flange Types Available: Blind Flanges, Lap Joint Flanges, Slip On Flanges, Socket Weld Flanges, Threaded Flanges, Weld Neck Flanges
Flange Dimensions Reference
Strength Meets Sealing in Duplex & Super Duplex Steel Threaded Flanges
SASA FLANGE supplies duplex super duplex steel threaded flanges engineered for high yield strength and dependable corrosion resistance.
These threaded flanges use a tapered female thread to join male pipe threads and create a tight seal without welding.
Duplex grades offer about 2x stronger yield than 316 stainless steel, while super duplex options provide improved resistance to stress-corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion for demanding offshore platforms and oil and gas service.
Grade-by-Grade Detail for Duplex & Super Duplex Steel Threaded Flanges
SASA FLANGE offers duplex super duplex steel threaded flanges in Duplex 2205, Super Duplex 2507, and Zeron 100 or F55.
Duplex 2205 includes UNS S31803, UNS S32205, W.
NR./EN 1.4462, and Werkstoff 1.4462, with a mixed microstructure of roughly equal ferrite and austenite.
Super Duplex 2507 is UNS S32750 and Werkstoff 1.4410, while Zeron 100 or F55 is UNS S32760, W.
Nr./EN 1.4501, and Werkstoff 1.4501.
Service should be limited below 570° F.
Where Duplex & Super Duplex Steel Threaded Flanges Perform Under Pressure
Duplex super duplex steel threaded flanges are widely used in chemical processing, petrochemicals, power industry, and seawater equipment because they combine strength with corrosion resistance.
For offshore oil platforms, they suit hazardous areas where welding is too dangerous.
In subsea oil and gas pipelines, threaded sealing supports connections when post weld heat treatment is not possible.
In desalination and seawater systems, Super Duplex 2507 performs especially well in warm chlorinated seawater and acidic, chloride containing media.
Act Fast with SASA FLANGE Duplex & Super Duplex Steel Threaded Flanges
Choose SASA FLANGE for duplex super duplex steel threaded flanges that simplify installation, avoid welding, and help reduce time and cost in explosive or frequently reconfigured systems.
We support custom manufacturing with a 10-20 days lead time and quality assurance through ISO 9001:2015, ferrite content testing, impact testing, and PMI verification.
For fast technical support on your application, contact sales@sasaflange.com or WhatsApp +86 13764965049 to discuss the right duplex threaded flange grade.
Why Choose SASA FLANGE?
Multiple Pressure ClassesPressure class data is not specified in the source, while threaded flange designs support industrial piping connection requirements. |
Precise Dimensional TolerancesDimensional tolerance values are not provided in the source, but threaded construction is intended to create a tight seal. |
Corrosion ResistantSuper Duplex 2507 offers improved resistance in warm chlorinated seawater and acidic, chloride containing media. |
ISO 9001 CertifiedISO 15156 and ISO 15156-3 references are listed in the material specifications for corrosion service compliance. |
Competitive PricingThreaded construction eliminates welding, helping save time and money during installation in suitable applications. |
Global ShippingSuitable for chemical processing, petrochemicals, power industry, and seawater equipment across international industrial markets. |
duplex super duplex steel threaded flanges Application Scenario
The duplex super duplex steel threaded flanges is widely deployed across critical industrial sectors where reliable pipe sealing and pressure containment are essential. Typical application scenarios include:
From high-pressure refinery piping to municipal water distribution networks, the duplex super duplex steel threaded flanges ensures leak-free connections and long-term service reliability in demanding environments.
duplex super duplex steel threaded flanges installed in industrial piping system
Frequently Asked Questions
Q: What is a duplex super duplex steel threaded flanges used for?
A: These threaded flanges connect threaded pipe or fittings without welding, using a tapered female thread for secure assembly and easier maintenance. They are used in offshore, chemical processing, seawater, desalination, oil and gas, and sour service systems where high chloride resistance, strength, and NACE MR0175/ISO 15156 compliance are required. Service temperature should generally remain below 570°F to preserve duplex microstructure performance.
Q: What materials are available for duplex super duplex steel threaded flanges?
A: Available grades include Duplex 2205 in UNS S32205 / UNS S31803, EN/Werkstoff 1.4462, plus Super Duplex 2507 in UNS S32750, Werkstoff 1.4410, and Zeron 100 / F55 in UNS S32760, EN 1.4501. These alloys have a mixed ferrite-austenite microstructure, typically near 50/50, providing higher yield strength than standard austenitic stainless steels with improved pitting, crevice, and stress corrosion resistance.
Q: What pressure ratings does a duplex super duplex steel threaded flanges support?
A: The exact pressure class is not specified in the provided data, so rating must be confirmed against flange dimensions, thread form, material grade, and applicable ASME design code. Threaded flanges are typically selected for moderate-pressure systems where welding is avoided. For duplex and super duplex service, rating verification should also consider temperature limits below 570°F and the required corrosion allowance for the process medium.
Q: What standards does a duplex super duplex steel threaded flanges comply with?
A: These flanges can be supplied to major duplex and super duplex material standards including ASME SA/A182, ASTM A182, ASTM A240, ASTM A276, ASTM A479, ASTM A789, ASTM A790, ASTM A815, EN 10088, EN 10216-5, NACE MR0175, and ISO 15156-3. Grade-specific references include UNS S31803, S32205, S32750, S32760, EN 1.4462, 1.4410, 1.4501, plus NORSOK MDS D45 Grade F51 and MDS 055.
Q: What is the lead time for custom duplex super duplex steel threaded flanges orders?
A: Custom orders normally require 15-30 days, depending on grade, size, thread specification, quantity, and testing scope. Stock items can ship in 3-7 days. SASA FLANGE has 15+ years of manufacturing experience and operates under ISO 9001:2015. Material Test Certificates are supplied per EN 10204 3.1. For confirmed schedules and technical review, contact sales@sasaflange.com or WhatsApp +86 13764965049.
Packaging and Shipping
📦 Packing is quite important especially in the case of international shipments in which consignments pass through various channels to reach the ultimate destination, so we put special concern regarding packaging to ensure every piece arrives in perfect condition.
SASA FLANGE packs goods in numerous ways based on the product type and customer requirements. Our standard packaging options include:
- Plywood cases / crates – for heavy flanges and large-diameter products
- Pallets with shrink wrap – for bulk orders and standard sizes
- Individual poly bags + carton boxes – for small flanges and fittings
- Anti-rust oil coating + waterproof paper – for long-distance ocean freight
- Custom marking and labeling – per customer specifications or project requirements
All packaging meets international export standards. Special packing instructions are welcome upon request.
