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Ayhan Tube Fittings, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of Super Duplex Steel Hydraulic Fittings. They specialize in delivering high-performance products tailored for industries that demand exceptional strength and corrosion resistance. These fittings are crafted with precision engineering, ensuring that they provide leak-proof, durable, and reliable connections in high-pressure hydraulic systems. Adhering to international standards and undergoing strict quality control, Ayhan Tube Fittings offers products that thrive even in the harshest environments. With a focus on customer satisfaction, prompt deliveries, and competitive pricing, the company has earned a solid reputation across various sectors, including oil and gas, marine, petrochemical, and power generation.
Super Duplex Steel Hydraulic Fittings are made from advanced materials like UNS S32750 and S32760, which contain around 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and nitrogen. This carefully balanced composition grants them excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich settings. On a mechanical level, these fittings boast superior tensile and yield strength—almost double that of standard stainless steels—along with remarkable fatigue resistance and toughness. These characteristics ensure that Super Duplex Steel Hydraulic Fittings can reliably perform under high-pressure and high-temperature conditions, all while maintaining a long service life and stability.
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | SUPER DUPLEX UNS S32750, UNS S32760 |
| SERIES | LL- LOW PRESSURE , L- MEDIUM PRESSURE, S- HIGH PRESSURE |
| WORKING PRESSURE | 1 BAR TO 700 BAR |
| SIZE RANGE | 6 MM TO 42 MM |
| CONNECTIONS | TUBE TO TUBE , TUBE TO MALE THREAD , TUBE TO FEMALE THREAD , TUBE TO BUTT WELD , TUBE TO SOCKET WELD , TUBE TO JIC 37* , TUBE TO 24* CONE, TUBE TO SWIVEL END , TUBE TO ADJUSTBALE STANDPIPE |
| WELD NIPPLE TO MALE THREAD , WELD NIPPLE TO FEMALE THREAD , WELD NIPPLE TO BUTT WELD , WELD NIPPLE TO SOCKET WELD , WELD NIPPLE TO 24* CONE , WELD NIPPLE TO 37* JIC , WELD NIPPLE TO SWIVEL | |
| BODY TYPE | FORGED, BAR STOCK |
| SURFACE | EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH |
| Grade | S32750 | S32760 |
| C | 0.030 max | 0.05 max |
| Mn | 1.20 max | 1.00 max |
| Si | 0.80 max | 1.00 max |
| P | 0.035 max | 0.030 max |
| S | 0.020 max | 0.010 max |
| Cr | 24.00 – 26.00 | 24.00 – 26.00 |
| Mo | 3.00 – 5.00 | 3.00 – 4.00 |
| Ni | 6.00 – 8.00 | 6.00 – 8.00 |
| N | 0.24 – 0.32 | 0.20 – 0.30 |
| Fe | 58.095 min | 57.61 min |
| Density (g/cm 3) | 7.8 |
| Density (lb/in 3) | 0.281 |
| Melting Point (°C) | 1350 |
| Melting Point (°F) | 2460 |
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex 2507 | 1.4410 | S32750 |
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These fittings are widely utilized in industries that require dependable and durable performance in challenging environments. In the oil and gas sector, they find applications in offshore drilling rigs, subsea systems, and refineries where exposure to chlorides is significant. Chemical and petrochemical facilities use them in aggressive fluid-handling systems. The marine and shipbuilding industries depend on them for seawater applications, while desalination plants also rely on their robust performance.
Super duplex steel hydraulic fittings are widely used in applications where high strength and exceptional corrosion resistance are required. They are ideal for oil and gas applications, especially in offshore drilling, where harsh marine environments are common. These products are used in chemical plants, petrochemical refineries and energy production to ensure integration with high pressure systems in addition to using super duplex steel hydraulic fittings in pulp and paper plants and desalination plants types, where Durability and resistance to aggressive chemicals are important for operational efficiency.
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