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Name: | Duplex Flanges & Suplex Dupex Flanges |
Specificaiton: | ASTM A182 |
Size:: | 1/2" to 120" |
Rating:: | 150Lb to 2500Lb |
Steel Grade:: | F51, F60 |
MOQ:: | 100 KGS |
Seal Face: | RF, RTJ, FF |
Delivery term: | FOB, CNF, CIF and EXW |
Payment Term: | TT or LC At sight |
Loading Port: | XINGANG |
Deliver mode: | By Sea, By Air and By Land |
Packing: | Standard seaworthy/airworthy packing |
Standard: | ANSI, JIS, BS, EN, DIN |
ASTM A182 SA/A182 F50, F51, F60, 2205, F61, F53, 2507 & F55 Duplex & Super Duplex Steel Flanges
Duplex stainless steel is a very useful metal that has been used worldwide. It gets its name because it contains two different grades of metals.
In essence, Duplex is a Fe-Ni-Cr alloy with a two-phase ferritic-austenitic stainless steel structure at room temperature.
Duplex steel is characterized by high chromium content (19-28%) and molybdenum (maximum 5%), and the nickel content is lower than that of austenitic stainless steel. The most commonly used duplex stainless steels are 2205 (22% chromium, 5% nickel) and 2507 (25% chromium, 7% nickel). 2507 is called "super duplex steel" because of its higher corrosion resistance.
The advantage of combining ferrite and austenite grades is that the resulting metal has a metallurgical structure composed of two phases and therefore benefits from the characteristics of both microstructures.
These characteristics make duplex steel highly sought after in heavy industries such as oil and gas nuclear and chemical processing.
Duplex stainless steel has many advantages, such as:
The wide range of advantages of duplex stainless steel means that it can be used in many different fields. They are used for:
Their uniqueness lies in their protruding neck. The long welded neck flange has the same thickness as the pipe, making it ideal for severe working conditions (such as high pressure).
They are only used for special applications. It is worth noting that you can quickly assemble threaded flanges without welding. As the name suggests, they are compatible with pipelines with external threads. Unlike welded neck flanges, threaded flanges are not the right choice where high pressure, high temperature and bending stress are involved.
If your budget is tight, consider using a slide-in flange. They are the most affordable, but still get the job done. It must be a bit larger than the pipe to make it easier to slide through the pipe. These flanges are welded to one location by fillet welding and cannot withstand high pressure.
They are a slip-in flange, but are used with short end joints. They are ideal for systems that require regular inspection and maintenance.
They are very durable and very suitable for small diameter and high pressure pipelines. They have internal welds to enhance their durability and fatigue strength. They are mainly used in the chemical processing industry.
These flanges can withstand high pressure and high temperature. They have a groove that can be easily compressed on the binding, sliding or welding neck flange. They help avoid pipeline leaks under high pressure.
These flanges can lead to metered liquid or gas lines. They are installed with orifice plates or flow nozzles.
The blind flange has no holes and is used to seal piping systems or containers. The blind flange must withstand high stresses due to internal pressure. They can be used in systems that require regular inspections.
Sizes: 1/2" - 36" +
Bores: S/5s - XXH
Pressures: 150# - 300# - 600# - 900# - 1500# - 2500#
Trade Name |
DUPLEX |
DUPLEX |
2205 DUPLEX |
SUPER DUPLEX FERRALIUM 225 |
SUPER DUPLEX 2507 |
SUPER DUPLEX ZERON 100 |
Forged Fittings |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
|
F50 |
F51 |
F60 |
F61 |
F53 |
F55 |
Flanges |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
A/SA182 |
|
F50 |
F51 |
F60 |
F61 |
F53 |
F55 |