SS / Duplex & Super Duplex Swage Nipples
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SS / Duplex and Super Duplex Swage Nipples
EBY Fasteners offers a wide range of swage nipples to meet various needs. Choose from standard stainless steel for general applications, duplex stainless steel for superior strength and corrosion resistance, or super duplex stainless steel for the harshest marine and chemical environments
These high-performance swage nipples are essential for critical applications in oil and gas, petrochemical, chemical processing, offshore platforms, shipbuilding, and power generation. Their strength and corrosion resistance ensures the reliable operation of pipelines, process equipment, and structural components
EBY Fasteners’ commitment to quality materials and precise manufacturing means their swage nipples are reliable, dimensionally accurate, and integrate seamlessly into demanding piping systems. This makes them a trusted choice in industries where component failure can have serious consequences
EBY Fasteners’ commitment to quality materials and precise manufacturing means their swage nipples are reliable, dimensionally accurate, and integrate seamlessly into demanding piping systems. This makes them a trusted choice in industries where component failure can have serious consequences
- F44 (660) : A less common stainless steel grade, known for its high chromium and molybdenum content. This gives it exceptional resistance to chloride pitting and crevice corrosion, making it a specialized option for very aggressive environments.
- F45 (S31254) : Another specialized stainless steel, sometimes referred to as a "super austenitic" due to its enhanced properties. It offers excellent resistance against a wide range of corrosive substances and particularly stands out against sulfuric acid.
- F51 (S31803/2205) : The most common duplex stainless steel grade. It exhibits remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, while possessing significantly higher strength compared to standard stainless steels.
- F53 (S32750) : A super duplex grade offering superior corrosion resistance and strength compared to duplex F51. This makes it ideal for extreme environments like offshore applications subject to harsh seawater or in demanding chemical processing.
- F55 (S32760) : An even higher-performance super duplex grade. Provides further enhanced corrosion resistance compared to F53, making it suitable for the most challenging applications with highly corrosive substances.
- F60 (S32205) : A less common super duplex grade, primarily used as an alternative to F51. It offers a slightly different balance of properties but maintains similar overall corrosion resistance and strength characteristics
- Materials : Swage nipples are manufactured using various grades of stainless steel (like 304 and 316), duplex stainless steel (typically 2205), and super duplex stainless steel (often 2507). The specific grade determines corrosion resistance and strength properties.
- Dimensions : Key dimensional specifications include Nominal Pipe Size (NPS), which dictates compatibility with standard pipes, end diameters for proper fitting, overall length, and whether the design is concentric (same diameter ends) or eccentric (different diameter ends).
- Standards : Swage nipples typically adhere to standards such as ASTM/ASME A/SA 182 for material composition, MSS SP-95 for dimensions, and potentially industry-specific standards like NACE in harsh environments.
- Pressure Ratings : The maximum pressure a swage nipple can withstand depends on the material grade, wall thickness, and design. Pressure ratings are often expressed as a Schedule Number, which corresponds to the wall thickness.
- Other Specifications : Additional specifications may include thread types (NPT, BSPT, etc.), temperature ratings (maximum and minimum operating temperatures), and specific surface finish requirements or coatings
- Grade Versatility : Available in common grades like 304 for general use and 316 for improved resistance against chlorides and acids, allowing for selection based on environment.
- Enhanced Strength : Significantly higher strength than standard stainless steels enables the use of thinner-walled components reducing overall weight, beneficial in space-constrained applications or where weight reduction is critical.
- Extreme Corrosion Resistance : Designed to withstand the most severe environments, including offshore installations with constant seawater exposure and chemically aggressive process industries.
- Exceptional Strength : Outperform even duplex stainless steel in strength, enabling significant weight reduction in components and making them ideal for high-pressure applications.
- Cost vs. Performance : While the most expensive option, their unparalleled corrosion resistance and durability can reduce long-term maintenance and replacement costs, making them a valuable investment in critical systems
- Refinery and Petrochemical : SS swage nipples are used for less demanding fluids and areas. Duplex finds applications in heat exchangers, process equipment handling aggressive chemicals, and areas at risk of stress corrosion cracking.
- Chemical : SS is suitable for general lines and less aggressive chemicals. Duplex takes over with moderately corrosive substances, especially those containing chlorides. Super Duplex is essential for handling very strong acids, alkalis, and highly corrosive environments.
- Oil and Gas : SS is found in topside equipment and less demanding pipelines. Duplex is used extensively in subsea components like flowlines, risers, and process equipment due to saltwater and produced fluids. Super duplex is crucial in wellheads, manifolds, and critical systems facing the harshest environments.
- Power Plant : SS is common for general water systems and non-critical components. Duplex and Super Duplex find applications in seawater cooling, water treatment areas handling corrosive chemicals, and potentially high-temperature sections.
- Offshore Platforms : Duplex dominates in piping, process equipment, valves, and even structural elements due to constant saltwater exposure. Super Duplex is critical for applications demanding the ultimate corrosion resistance and strength to withstand marine conditions.
- Ship Building : SS is used in freshwater, fuel lines, and general applications. Duplex is used for ballast water systems, seawater piping, and fire suppression. Super Duplex finds use in chemical tankers, specialized cargo holds, and components exposed to highly corrosive substances.
- Industrial Machineries : SS is common in hydraulics, pneumatics, and less corrosive fluid handling. Duplex and Super Duplex become necessary when corrosive chemicals, high pressures, or marine environments are factors.
- Pharmaceuticals : High-grade stainless steel (316L) is standard for process piping, valves, and equipment due to hygiene and corrosion resistance. Super Duplex might be used in processes involving harsh cleaning agents or high chloride concentrations.
- Pumps and Compressors : Swage nipple material depends entirely on the specific liquids or gases pumped. SS is suitable for less demanding substances, while Duplex or Super Duplex might be necessary for highly corrosive or abrasive fluids.
- Dairy and Food, Sugar Mills, Textile Machineries : Stainless steel (often food-grade) is standard for food compatibility and resistance to cleaning chemicals, sugars, and dyes. Duplex or Super Duplex might be necessary for particularly harsh cleaning agents or corrosive byproducts.
- Fertilizers and Pesticides : Duplex and Super Duplex are crucial for handling the highly corrosive chemicals used in fertilizer and pesticide production and application
Chemical Composition
| Element | Percentage |
|---|---|
| Chromium (Cr) | 16 - 26 |
| Nickel (Ni) | 4.5 - 14 |
| Molybdenum (Mo) | 0 - 4.5 |
| Nitrogen (N) | 0 - 0.3 |
| Copper (Cu) | Traces |
