A182 F55 / S32760 Weldolet Super Duplex Forged Fitting, MSS SP-97 Branch Connection For Desalination Plants

What is a A182 F55 weldolet?

A weldolet is a forged, butt‑weld branch connection fitting designed to create a reinforced outlet from a main pipeline, complying with MSS SP‑97. It features a contoured body that matches the curvature of the run pipe, distributing stress evenly and enhancing structural integrity.
Made from A182 F55 (UNS S32760) super duplex stainless steel, it offers exceptional strength, high resistance to chloride pitting, crevice corrosion, and stress corrosion cracking (SCC), making it ideal for harsh environments like offshore oil and gas, seawater systems, sour service, and chemical processing.

Weldolets are welded directly to both the main pipe and branch pipe via beveled ends, providing a smooth, leak‑proof connection. They replace traditional tees and unreinforced saddles, offering better pressure rating and durability. Common sizes range from 1/2" to 36" for main pipes and 1/8" to 24" for branches.

Advantages of A182 F55 / UNS S32760 Weldolet

A182 F55 (S32760) is a super duplex stainless steel that delivers exceptional performance for weldolets, especially in harsh environments.

1. Extreme corrosion resistance

    

   Outstanding resistance to chloride pitting, crevice corrosion, and stress corrosion cracking (SCC) – far better than 316L and standard duplex

2. High strength & pressure capacity

    

   Higher tensile and yield strength than austenitic grades, allowing reliable use in high-pressure pipelines.

3. Excellent seawater resistance

    

   Ideal for offshore, marine, desalination, and brackish water systems.

4. Sour service compatible

    

   Performs well in H₂S-containing oil/gas applications.

5. Long service life & low maintenance

    

   Reduces replacement, leakage risk, and lifecycle cost.

6. Perfect for weldolet design

    

   Forged contour provides a strong, leak‑proof branch connection with superior structural integrity.

Chemical Composition(%) of A182 F55 / S32760

Mechanical Properties of A182 F55 / S32760

Applications of A182 F55 / UNS S32760 Weldolet

• Offshore & Marine: Oil/gas platforms, subsea pipelines, seawater injection, cooling systems.

• Oil & Gas: Sour service (H₂S), flowlines, process piping, high-pressure wellheads.

• Desalination: Seawater intake, brine disposal, RO plant piping.

• Petrochemical & Chemical: Chloride, acidic, and aggressive process media.

• Power Generation: FGD systems, high-temperature/pressure utility lines.

• Water & Wastewater: Chlorinated water, industrial effluent lines.

• Pulp & Paper: Corrosive cooking and bleaching circuits.