Duplex Stainless Steel Socket Weld and Threaded Fittings

Duplex Stainless Steel Socket Weld and Threaded Fittings are designed for use in high-strength, high-corrosion environments. Duplex stainless steels combine the properties of both austenitic and ferritic stainless steels, offering high strength and excellent resistance to corrosion, especially in chloride environments. Below is a detailed overview of duplex stainless steel fittings, including their specifications, types, grades, and standards.Duplex Stainless Steel Socket Weld and Threaded Fittings1. Overview• Standard: ASME B16.11• Material: Duplex Stainless Steel• Types: Socket Weld Fittings and Threaded Fittings• Grades: Common grades include UNS S31803, UNS S32205, UNS S32750 (F53), and UNS S32760 (F55).2. Types of FittingsSocket Weld Fittings:• Elbows: Change the direction of the pipe.o 90° Elbowo 45° Elbow• Tees: Connect three pipes.o Equal Tee: All three outlets are the same size.o Reducing Tee: One outlet is a different size.• Couplings: Join two pipes of the same size.o Full Couplingo Half Coupling• Unions: Allow for easy disconnection of piping.• Plugs and Caps: Seal the end of a pipe or fitting.Threaded Fittings:• Elbows: Change the direction of the pipe.o 90° Elbowo 45° Elbow• Tees: Connect three pipes.o Equal Teeo Reducing Tee• Couplings: Join two pipes of the same size.o Full Couplingo Half Coupling• Bushings: Reduce the size of a fitting.• Plugs and Caps: Seal the end of a pipe or fitting.• Unions: Allow for easy disconnection of piping.3. Material GradesCommon Duplex Stainless Steel Grades for Fittings:• UNS S31803 (F51) / UNS S32205 (F60):• UNS S32750 (F53):• UNS S32760 (F55):5. Pressure Ratings• Class 3000: Up to 3000 psi (206.8 bar) at 100°F (38°C)• Class 6000: Up to 6000 psi (413.7 bar) at 100°F (38°C)6. Standards and Specifications• ASME B16.11: Covers dimensions, materials, and pressure-temperature ratings for socket weld and threaded fittings.• ASTM Standards: Define material specifications for different duplex and super duplex stainless steel grades, such as ASTM A182 F51, F53, and F55.8. Testing and Quality Control• Visual Inspection: To identify any visible defects.• Dimensional Inspection: Ensures compliance with specified dimensions.• Non-Destructive Testing (NDT): Techniques such as ultrasonic or radiographic testing to verify material integrity.• Hydrostatic Testing: Confirms that the fittings can withstand the specified pressure.SummaryDuplex Stainless Steel Socket Weld and Threaded Fittings per ASME B16.11 are designed to provide excellent strength and corrosion resistance, particularly in harsh environments. These fittings are available in grades such as UNS S31803, UNS S32205, UNS S32750 (F53), and UNS S32760 (F55). They are used in various piping systems and adhere to specific dimensions and pressure ratings. Quality controlSPECFICATIONS:• Manufacturing Range: DN 15 (1/2”) to DN 100 (4”)• Rating/Class: 3000/6000/9000• Dimension Standard: ANSI/ASME B16.11, BS 3799, MSS SP83, MSS SSP97, etc.Material Type: STAINLESS STEEL: ASTM A182 F304 (1.4301), F304L (1.4306/1.4307), F316 (1.4401), F316L (1.4404), F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L,  UNS S 31254 (1.4547) DUPLEX STEEL: Duplex (S32205 / S31803) X2CrNiMoN22-5-3 (1.4462), S32750 (EN/DIN 1.4410, X2CrNiMoN25-7-4), S32760 (1.4501, X2CrNiMoCuWN 25-7-4)