2 inch pipe flange astm a266 gr.4 steel flange fitting

Duplex steel flanges are widely used in the used engineering, machinery and automotive industries. Duplex Steel S31803 Lap Flanges are ideal for applications requiring better corrosion resistance than Type 316 and good high temperature strength. We have Duplex Steel S31803 / S32205 Flanges in stock. Duplex steel flanges are commonly used in chemical, petrochemical, and power industries.

UNS S32205 Duplex Steel ASME SA182 Butt Weld Flanges are suitable for seawater and power generation equipment because their smooth surfaces can withstand temperatures up to 600¡ãF, while also having excellent flow characteristics.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

Butt weld flanges are flanges designed to be connected to piping systems by butt welding. There are many specifications of this flange. Butt weld flanges are expensive because of their longer necks and high personnel costs for WN flanges in contact with pipes or fittings, but are preferred for high stress applications. The neck or hub transfers the stress to the pipe.

Duplex 2205 is characterized by high resistance to chloride stress corrosion cracking, chloride pitting and crevice corrosion resistance, good general corrosion resistance, good sulfide stress corrosion resistance, high strength and good weldability and workability.

Use of duplex and super duplex stainless steels should be limited to below 570¡ãF, as prolonged exposure to high temperatures can make the material brittle.

Due to the material composition, the strength and the corrosion resistance, these flanges are used in a variety of applications.

Compared to the corresponding austenitic steels, they are more prone to precipitation of sigma phases, nitrides and carbides, leading to embrittlement and reduced corrosion resistance. Duplex steel pipe flanges are an ultra-steel suitable for use in highly corrosive conditions where very high mechanical strength is required.

Based on composition, materials can be classified as Standard Duplex, Super Duplex, and Lean Duplex. Duplex steel flanges are suitable for high pressure, high temperature and highly corrosive applications. Duplex is also cost effective and has recently been used and replaced by other material grades.

SA 182 F53 S32750 Flange is a super duplex stainless steel supplied in the hot worked and solution annealed condition.

The different face types have their own advantages in piping applications.

This exotic alloy is used in oil and gas exploration and is also used in the chemical processing industry. Most processing equipment uses Duplex 2205. Also used by industrial storage and transportation units. Pulp and paper digesters, liquid tanks and paper machines also use Duplex 2205. It is ideal for use in marine environments.

Duplex stainless steel grades are named duplex because these duplex flange equivalent grades have a two-phase microstructure. This two-phase microstructure consists of ferritic and austenitic stainless steel-like grains. As the name suggests, the duplex construction gives this duplex stainless steel socket weld flange material a variety of attractive properties.

S31803 has been supplemented by S32205 which has a higher minimum N, CR and Mo.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

S32205 is a dual-phase steel with nearly equal proportions of austenite and ferrite in its chemical composition. This combination makes the alloy stronger than standard austenitic steels. The Duplex Steel S31803 Ring Fitting Flange is a low carbon version and is immune to sensitization.

Duplex 2205 flanges are made from austenitic-ferritic stainless steel and are designed to provide higher strength and corrosion resistance than 300 series stainless steel. It helps users avoid stress corrosion cracking common to 316 and 317. Duplex 2205 flanges combine the stress corrosion cracking resistance and high strength of ferritic alloys with austenitic fabrication capabilities.

ASTM A182 F51 equates to UNS S31803. This was the original caption for a 22% Cr duplex stainless steel.

A secondary task of duplex steel flanges is to facilitate workers who access these systems to clean, inspect or modify them. In general, applications of duplex stainless steel flanges are found in the following industries, namely chemical plants, chemical tankers, thermal power plants, desalination plants, seawater pumps, flue gas desulfurization plants, construction works, and pulp and paper mills. These industries utilize piping systems to transfer media, which often creates some kind of pressure on conventional flanges.

Dual-phase steel butt-welded raised face flanges provide excellent and consistent machinability for increased cutting speeds, reduced tool wear and set-up time.

Other applications for 2205 flanges include use in marine and other high chloride environments, biofuel plants, pulp and paper industry – digesters, bleaching equipment, stock handling systems, and food processing equipment. Major industries using these Duplex 2205 flanges include asphalt upgrading plants, nuclear power (mostly seamless), heavy oil refineries, and petrochemicals and acids.

Duplex flanges are made of a special stainless steel with austenitic and ferritic metallurgical features in its microstructure. These are magnetic steels with high corrosion resistance and work hardening.

Double butt weld flanges are best suited for hazardous high pressure applications. Butt weld flanges are easily identified by their long tapered neck.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

Each different type has its own advantages. Different grades of duplex steel have different mechanical and physical properties due to different chemical compositions. ASTM A182 F60 flanges are high performance, cost effective and long life flanges. There are different face types such as ring joint flanges, flat face flanges and raised face flanges.

ASTM A182 UNS S31803 Duplex Flanges are mainly suitable for the four groups Martensite, Ferritic and Austenitic, and finally hardened steel. These are forming because they are based on crystal structures and stainless steel. They give you the facility to withstand high temperatures and also give them the strength of UNS S322O5 butt welded pipe. They are said to be made from a chemical composition of equal proportions of austenite and ferrite.

The flange is second most used joining method after selding. Flanges are used when joints need dismantling. It provides flexibility for maintenance. Flange connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance in required during plant operation.
A flanged joint is composed of three separate and independent although interrdlated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter. Special controls are required in the selection and application of all there elements to attain a joint, which has acceptable leak tightness.
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term “flange” is also used for a kind of tool used to form flanges.

The base body of the DIN 1.4462 flange has both a ferritic and austenitic structure. The duality of their microstructure changes not only the mechanical properties but also their corrosion resistance properties. The chemical composition of UNS S31803 Socket Weld Flanges consists of 22% chromium, 3% molybdenum, and 5% to 6% nickel.

It is needed when the neck needs to be lengthened. Duplex steel flanges act as extensions. Duplex steel flanges are used in the chemical and petroleum industries for residential and commercial buildings. Duplex steel flanges perform well under pressure levels and temperature fluctuations. Long butt weld flanges are available in various lengths, sizes and dimensions according to customer needs.

The ASTM A182 F51 flanges refer to standard or non-standard flanges manufactured in accordance with ASTM A182 Grade F51, which is designated with UNS number S31803.

The combination of chromium, molybdenum and nitrogen provides Duplex 2205 flanges with good chloride pitting and crevice corrosion protection, which makes them useful in marine environments, brackish water, bleach operations, closed loop water systems and some food processing applications. Although it is important to remember that pitting corrosion can be a problem in chloride solutions when oxidizing media are present. Under these conditions, the passive (protective) layer of the Duplex 2205 material may be damaged and localized pitting may occur.

Butt welding flanges are drilled (machined), and the wall thickness of the flange is the same size as the matching pipe. The lighter the tube, the larger the diameter, and conversely, the heavier the tube, the smaller the diameter. Our range of butt weld flanges, butt weld flanges are typically used for high pressure, low temperature or high temperature.