SS seamless pipes Super Duplex Diameter 114.3mm X Sch 40

Seamless pipes are cylindrical, hollow tubes without any welding seam. Unlike welded pipes, which are made by joining metal pieces together, seamless pipes are created through an extrusion process where the entire pipe is formed as a single piece. This not only gives the pipe a smoother surface but also improves its mechanical strength, making it a preferred choice for high-pressure applications.

The absence of a seam also makes these pipes more resistant to corrosion, which is especially important in harsh environments like offshore drilling or chemical plants.

The production of Super Duplex seamless pipes begins with raw material selection, where high-quality Super Duplex steel is chosen. The metal is heated and pierced to create a hollow tube, which is then extruded to form the pipe. After extrusion, the pipe undergoes heat treatment to enhance its mechanical properties, followed by rigorous testing to meet industry standards.

Super Duplex stainless steel (SDSS) is a special class of stainless steel known for its mixed microstructure of austenite and ferrite. This dual-phase structure gives it enhanced strength and superior resistance to corrosion compared to standard duplex and austenitic stainless steels. The composition of Super Duplex includes chromium, nickel, molybdenum, and nitrogen, all of which contribute to its high performance in extreme conditions.

• Higher Corrosion Resistance: Super Duplex steels outperform standard duplex and austenitic steels, particularly in environments exposed to chlorides and other corrosive elements.
• Enhanced Strength and Durability: With almost twice the strength of standard austenitic stainless steels, Super Duplex pipes are ideal for heavy-duty applications.
• Cost Effectiveness in Long-Term Applications: Although Super Duplex may have a higher upfront cost, its longevity and low maintenance needs make it more cost-effective in the long run.

If you're wondering why a diameter of 114.3mm and a Schedule 40 thickness matter, let’s break it down. This specific size offers an ideal balance between flow rate, pressure handling, and structural integrity. It's a versatile dimension used across various industries where high performance is critical.

• Pipe Diameter (114.3mm): This refers to the outside diameter of the pipe. A 114.3mm pipe provides a sufficient internal flow capacity without compromising on strength.
• Pipe Thickness (Schedule 40):Schedule 40 defines the wall thickness of the pipe, which in turn influences its pressure-handling capacity. Pipes with Schedule 40 thickness can handle moderate pressures while maintaining good structural integrity.

Super Duplex seamless pipes are known for their excellent resistance to:

• Stress Corrosion Cracking: Particularly in chloride-rich environments.
• Pitting and Crevice Corrosion: Thanks to their high chromium and molybdenum content.
• Superior Mechanical Strength and Durability: Making them suitable for heavy-duty industrial applications.