duplex butt welding pipe fitting asme b16.9 forged lap joint stub end

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.

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.

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 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.

Duplex S31803 butt weld flanges combine good mechanical strength and ductility with moderate to good corrosion resistance in a variety of environments. Duplex S31803 threaded flanges are the most widely used duplex stainless steel grade. Duplex S31803 lap joint flanges feature a high yield strength that is twice that of standard austenitic stainless steel grades.

Duplex 2205 Flat Face Flange Manufacturers recommend this stainless steel grade for industrial applications such as chemical processing, transportation and storage – pressure vessels, tanks, pipes and heat exchangers, sewage scrubbing systems, cargo holds of ships and trucks, petroleum and natural gas exploration and processing equipment – pipelines, pipes and heat exchangers.

The advantage of the dual-phase structure is that it combines the advantages of ferritic alloys (resistance to stress corrosion cracking and high strength) with the advantages of austenitic alloys (ease of manufacture and corrosion resistance). The service temperature of 2205 duplex stainless steel should be limited to below 600¡ãF. Prolonged exposure to high temperatures can make 2205 stainless steel brittle.

Duplex stainless is a mixed microstructure of austenitic and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades with similar corrosion resistance qualities.

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.

Duplex Steel UNS Grade S32205 Duplex Steel is resistant to chloride environments and sulfide stress corrosion. Its yield strength is approximately twice that of standard austenitic stainless grades. Duplex steel UNS S32205 flanges are extremely durable and can also be easily installed to any size thanks to the different shapes and sizes available.

Duplex 2205 and Super Duplex 2507 stainless steel butt weld flanges feature a high yield strength that is twice the annealed yield strength of typical austenitic stainless steels such as 304 and 316 stainless steel butt weld flanges. Because of this, Duplex 2205 and Super Duplex 2507 steels are some of the most common duplex grades used for butt weld flanges, with Super Duplex 2507 butt weld flange being the more corrosion resistant grade of the two.

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

We offer a complete range of flanges, including slip flanges, socket weld flanges, blind flanges, lap flanges, threaded flanges, butt weld flanges, reducer flanges, and more. Due to a wide range of customer requirements, we offer these super duplex steel UNS S32750 flanges in a variety of sizes.

Duplex is often found in desalination and pressure vessel equipment located in port cities.

Due to the alloy’s excellent resistance to dilute hydrochloric acid, Super Duplex 2507 flanges can be used in the chemical processing industry. Another common problem with steel alloys is that they tend to corrode during welding. When the alloy is welded, the temperature is high, and the excess carbon atoms are precipitated to form carbide precipitates.

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.

Both austenite and ferrite are present in the microstructure of this alloy. Therefore, super duplex flanges have similar properties to these two stainless steels. These components have excellent performance in applications exposed to chlorine solutions.

This alloy is especially useful in the -50¡ãF/+600¡ãF temperature range. For applications outside this temperature range, this alloy can also be considered, but there are some restrictions, especially when used in welded structures.

The formation of intermetallic phases such as sigma phase in duplex steel flange flanges occurs in the temperature range of 600¡ãC – 1000¡ãC, and the decomposition of ferrite occurs in the temperature range of 350¡ãC – 500¡ãC ( 475¡ãC embrittlement).

Super Duplex Flanges use pure quality alloys with mixed austenitic and ferritic microstructures and high molybdenum and chromium content. This superior chemical composition provides superior resistance and increased strength. The products we manufacture are used in a wide variety of applications and industries. These flanges are highly resistant in corrosive, acidic and reducing environments.

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.

The combination of chromium, molybdenum and nitrogen gives 2205 good resistance to chloride pitting and crevice corrosion. This resistance is extremely important for services such as marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications. The high chromium, molybdenum and nitrogen content of 2205 provides better corrosion resistance than common stainless steels such as 316L and 317L in most environments, and Citizen Metals has been actively involved in ensuring the best possible quality for our customers.

An austenitic-ferritic stainless variant with a higher stress corrosion cracking resistance in comparison to regular austenitic 304 and 316 stainless, but with a lower toughness and impact strength.

ASTM A182 F51 flanges refer to pipe flanges made from the forged duplex stainless steel grade UNS S31803 for use in pressure systems.

Butt weld flanges are flanges designed to be connected to piping systems by butt welding. This type of flange comes in a wide range of sizes, butt weld flanges are expensive due to their long necks and the cost of personnel to contact the WN flange with the pipe or fitting, but are preferred for high stress applications. The neck or hub transfers the stress to the pipe.

The oxidation resistance of these dual phase steel S31803 butt weld flanges is good at high temperatures, but tends to become brittle at temperatures above 300 degrees Celsius, brittle after only 2 hours of exposure at 475 degrees Celsius. These dual phase steel S32205 ring joint flanges also feature high corrosion and erosion fatigue performance as well as lower thermal expansion and higher thermal conductivity than certified.

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.

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.

This means that it derives its superior ductility and corrosion resistance from the austenite in the alloy, and the Werkstoff No 1.4462 BLRF flange has higher strength and hardness, both of which are ferritic part.

The flanges could also be manufactured as screwed, threaded or forged types. The forged flanges are made from a single piece of raw material. These are also called the cast flanges.

2205 Duplex Steel consists of a two-phase microstructure of ferrite and austenite. When it comes to the chemical composition of 2205 duplex steel flanges, they mainly contain 22% chromium, 3% molybdenum and 5-6% nickel in the form of alloyed stainless steel.

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.