| Flanges Types | Slip On, Weld Neck, Long Weld Neck, Threaded, Blind, Companion, Lap Joint |
|---|---|
| Class | 150 Lbs, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs Asa 150, Asa 300, Pn 6, 10, 16, 25, 40, 64, 100, 160 |
| Size | 1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000 |
| Type | Raised Face (rf), Flat Face (ff), Ring Type Joint (rtj), Lap Joint Face (ljf), Large Male Female (lmf), Small Male Female (smf), Large Tongue & Groove, Small Tongue, Groove |
Super Duplex Flanges manufactured in India for offshore oil gas chemical processing and high pressure pipeline systems
Sagar Steel Corporation is a trusted Super Duplex Flanges Manufacturer that provides high-strength and corrosion-resistant flanges made from premium super duplex stainless steel. These flanges exhibit excellent mechanical properties, superior pitting and stress corrosion cracking resistance, and are roughly twice as strong as standard austenitic stainless steels. Designed for demanding applications, they are widely used in offshore, marine, oil & gas, and chemical processing industries. With a balanced ferritic-austenitic structure, these flanges perform exceptionally well in high-pressure, high-corrosion environments. We also supply Alloy Steel Flanges to meet additional industrial requirements.
The modern industrial market has simplified sourcing super duplex flanges using interfaces in the B2B marketplace and ensured it is more reliable and efficient. These flanges can be completely customized to suit face type, pressure rating, and dimensional requirements for demanding applications. Their scalability to large orders makes them suitable for large-scale infrastructure projects, undersea works, desalination, and chemical processing plants. These flanges have strong logistics and global distribution and provide reliable operation, long service life, and quality stability in challenging industrial processes
Super Duplex Flanges – Material & Grade Table
| Material | Grade / Specification | UNS No. | Key Properties | Applicable Standards |
|---|---|---|---|---|
| Super Duplex Stainless Steel | Super Duplex 2507 | S32750 | Excellent pitting & crevice corrosion resistance | ASTM A182 / ASME B16.5 |
| Super Duplex Stainless Steel | Zeron 100 | S32760 | High PREN, offshore-grade corrosion resistance | ASTM A182 / ASME B16.5 |
| Super Duplex Stainless Steel | SDSS 2507 (Forged) | S32750 | High strength, chloride resistance | ASTM A182 |
| Super Duplex Stainless Steel | SDSS 2507 (Cast) | J93404 | Excellent toughness and corrosion resistance | ASTM A995 |
| Super Duplex Stainless Steel | Super Duplex Alloy | — | Balanced austenitic–ferritic structure | ASTM / EN Standards |
Super Duplex Flanges – Sizes & Availability Table
| Material | Grade / Specification | UNS No. | Key Properties | Applicable Standards |
|---|---|---|---|---|
| Super Duplex Stainless Steel | Super Duplex 2507 | S32750 | Excellent pitting & crevice corrosion resistance | ASTM A182 / ASME B16.5 |
| Super Duplex Stainless Steel | Zeron 100 | S32760 | High PREN, offshore-grade corrosion resistance | ASTM A182 / ASME B16.5 |
| Super Duplex Stainless Steel | SDSS 2507 (Forged) | S32750 | High strength, chloride resistance | ASTM A182 |
| Super Duplex Stainless Steel | SDSS 2507 (Cast) | J93404 | Excellent toughness and corrosion resistance | ASTM A995 |
| Super Duplex Stainless Steel | Super Duplex Alloy | — | Balanced austenitic–ferritic structure | ASTM / EN Standards |
- Very high mechanical strength than in standard stainless steel flanges.
- Excellent resistance to pitting, crevice, corrosion and stress corrosion crack.
- Outstanding performance in the seawater and chloride environments.
- Fits high pressure high temperature service environments.
- Extended serviceability and low maintenance levels.
Type of Sub-products

Super Duplex Weld Neck Flange Super Duplex Weld Neck Flange
Designed for critical high pressure systems, this flange features a tapered hub and strong weld connection. Used in offshore drilling, chemical reactors, and high stress applications.

Super Duplex Slip On Flange Super Duplex Slip On Flange
Slides over the pipe and is fillet welded for secure attachment. Suitable for low to medium pressure applications in desalination plants and marine pipelines.
