Home > Duplex Steel > Duplex Steel Pipe Fittings
| Specifications | ASTM A815/ ASME SA815 |
|---|---|
| Bending Radius | Radius=1 D, 2D, 3 D, 5D, 6D, 8 D, 10D |
| Size Range | Seamless Butt-Weld Fitting: From 1/2″ – 10″ Welded ButtWeld Fitting: From 1/2″ – 48″ |
| Dimension | ASME/ ANSI B16.9 | ASME B16.28 | MSS-SP-43 | BS1560 | BS4504 | BS10 |
| Size Ranges | ½” NB to 24″ NB in Schedule 10s, 40s, 80s, 160s, XXS. |
| Other Grades | Duplex 2205 Fittings, UNS S31803 Fittings, UNS S32205 Fittings |
| Types | Welded | Seamless | Fabricated |
| Process of Duplex Steel Fittings Manufacturer in india | Push, Press, Cast, Forge. |
| Thickness of Fitting | SCH10, SCH 20, SCH30, STD SCH40, SCH80, SCH60, XS, SCH100, SCH 120, SCH140, SCH 160, XXS available with NACE MR 01-75 |
| Gr. | Density (lb/in 3) | Density (g/cm 3) | Melting Point (°F) | Melting Point (°C) |
| Duplex Steel Pipe Fittings | 0.285 | 7.805 | 2588 – 2669 | 1420 – 1465 |
| Grade | S31803 |
|---|---|
| S | 0.020 maximum |
| C | 0.030 maximum |
| Cr | 22.0 – 23.0 |
| Mn | 2.00 maximum |
| Ni | 4.50 – 6.50 |
| Si | 1.00 maximum |
| Fe | 63.72 min |
| P | 0.030 maximum |
| Mo | 3.0 – 3.5 |
| N | 0.14 – 0.20 |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for all your piping requirements. With cutting-edge production facilities strategically situated in the New Zealand, we hold an extensive inventory of more than 25,000 tons of top-quality materials kept in stock and ready to ship.
Reach out to us for a fast quote tailored to your requirement.
We supply these Duplex Steel Pipe Fittings in accordance with DIN, ISO, JIS or ANSI Standard.
Water resistance: Duplex steel pipe fittings offer outstanding resistance to corrosion, particularly in demanding conditions like chloride, acid and sea water. This durability helps prolong the fitting’s lifespan and cuts down on maintenance expenses.
High Strength: Duplex stainless steel pairs high strength with great flexibility and rigidity. This makes double steel pipe inserts well suited for uses that demand high strength, including offshore marine settings, chemical plants and the oil and gas industries.
Resistance to Stress Corrosion Cracking (SCC): Duplex steel provides outstanding resistance to stress corrosion cracking when compared to austenitic and ferritic stainless steel This quality makes it perfect for use in places where corrosion and stress frequently occur, e.g petrochemical plants and desalination facilities
Cost: In spite of its superior qualities, duplex steel pipe fittings can frequently be cost-effective when compared to other corrosion-resistant alloys, like super-austenitic and nickel-based ones. This saving on cost becomes particularly evident when The longer service considers the life expectancy and lower maintenance of double metal fixtures.
Excellent weldability: Duplex steel demonstrates excellent weldability, easing the fabrication and installation of pipe fittings. This quality makes designing complex pipeline systems desirable and supports efficient design.
Duplex Steel Pipe Fittings applications are as varied as the industries they support, led mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Oil and Gas Industry: Duplex steel pipe fittings find broad application across offshore and onshore oil and gas exploration, production, refining and transportation. Thanks to their outstanding corrosion resistance and high strength, they serve subsea pipelines, risers, and numerous other uses even in harsh environments containing chloride ions; flows and other controls remain fine.
Chemical applications: Duplex steel pipe fittings are extensively employed in chemical plants that demand resistance to chemical corrosion, acids and high temperatures. They frequently appear in reactors, heat exchangers, storage tanks and piping systems intended for corrosive water treatment.
Desalination equipment: Where seawater is turned into fresh water, duplex steel pipe fittings are the favored choice owing to their outstanding resistance to seawater and salt solution corrosion, and they serve a range of uses including pumps, valves, the interior of heat exchangers and piping systems.
Pulp and Paper Industry: The pulp and paper industry relies on duplex steel pipe fittings to cope with the corrosive chemicals, bleaching agents and high temperatures built into the design. They serve in digesters, bleaching towers, evaporators, and piping systems and offer significant corrosion resistance and abrasion resistance.
Power generation: Within power plants, duplex steel pipe fittings serve critical roles such as boilers, heat exchangers, condensers, piping systems, and more. They deliver corrosion resistance against high-temperature steam, aggressive cooling water and the chemicals involved in power generation processes.
Understand application requirements: Begin by gaining a complete understanding of your requirements, covering operating conditions, water usage, temperature, pressure, corrosion likelihood, and environmental factors. This knowledge will help you identify the key features that duplex steel pipe fittings need to possess.
Material Selection: Choose a stainless steel with a suitable duplex grade according to the particular needs of your application. Common options include Duplex 2205 (UNS S32205/S31803) and Super Duplex 2507 (UNS S32750). Take into account corrosion resistance, strength, and heat resistance when selecting a long-lasting material.
Size and Design: Establish the necessary size, thickness, and pipe fittings specifications according to the piping system layout, flow rate, and pressure demands. Verify that the fittings comply with standards and specifications such as ASTM, ASME, ANSI, and DIN.
Corrosion resistance: Assess the corrosion resistance needs based on moisture levels, corrosive chemicals, chloride, acids, and other corrosive substances present in the environment. Pick a duplex steel pipe offering sufficient corrosion resistance to guarantee durability and reliability.
Pressure and Temperature Analysis: Take operating pressure and temperature conditions into account to confirm that duplex steel pipe fittings can handle the required pressure and temperature levels without breaking down or deforming. Make sure the fitting is matched to the specific pressure and temperature conditions of your application.
Duplex steel pipe fittings are less prone to galvanic corrosion than many other metals, yet under specific circumstances they can still undergo it. Conditions such as contact with more noble metals or exposure to chloride-heavy environments raise the likelihood. Choosing the right material, employing isolation methods, using cathodic protection, and paying attention to design and installation are key to reducing this. Although duplex steel provides excellent corrosion resistance, it’s wise to account for the possibility of galvanic corrosion and adopt preventative steps in critical applications.
Duplex steel pipe fittings are indeed very recyclable. Duplex stainless steel is a stainless steel blend of iron, chromium, nickel and molybdenum, and each of these is a recyclable material. Recycling duplex steel pipe fittings involves melting the metal to strip away materials used in the production process, after which it is used to create other steel products. Recycling duplex steel fittings that can be manufactured preserves natural resources and lowers energy use and greenhouse gas emissions tied to steel production, which makes it an eco-friendly option. Along with the corrosion-resistant qualities of duplex steel, recycled products add to durability.
Duplex steel pipes can indeed be employed for underground applications. Their outstanding corrosion characteristics make them well-suited for environments where water, soil, and subsurface conditions may trigger corrosion, along with other factors, such as resistance to chloride-induced corrosion, pitting and stress corrosion cracking, duplex steel oil-gas, chemical processing, and city -They are particularly well-suited for underground piping systems in sectors like buildings Proper coatings and cathodic protection can give the steel duplex used in underground applications longer again, guaranteeing extended service life, and lowering maintenance needs.
Email: sales@koasteel.nz
