Duplex Stainless Steel S31083 S32205 Flanges be connected using a single fillet weld

Higher chromium, molybdenum and nitrogen content results in a Pitting Resistance Equivalent Number (PREN) > 40, providing superior pitting and crevice corrosion capabilities to austenitic and duplex stainless steels in virtually all corrosive media, and critical pitting temperature Above 50¡ãC .

It is widely used in offshore oil and gas exploration/production and in heat exchangers in petrochemical/chemical processing.

UNS S31803 Bolted Fasteners are used in marine, agricultural, chemical, construction, shipping, aviation, nuclear and industrial equipment.

Duplex 2205 bolts (EN 1.4462 ) are made of austenitic-ferritic stainless steel and are designed to provide higher strength and corrosion resistance than 300 series stainless steels. It helps users avoid stress corrosion cracking common to 316 and 317. Duplex 2205 bolts combine the stress corrosion cracking resistance and high strength of ferritic alloys with austenitic fabrication capabilities.

ASTM A479 Duplex Stainless Steel 1.4462 Punched Gaskets are SCC resistant which is prominent in many applications such as hot water tanks, brewing tanks, desalination plants and processing plants. Therefore, ASTM A479 Duplex Stainless Steel UNS S31803 Lock Washers exhibit the properties of ferritic and austenitic alloys.

Super Duplex SAF 2507 is a really strong material with great corrosion resistance.

Alloy 2205 gets the name Duplex because it is composed of two different types of grains. 40-50% of its grain structure is austenite and 50-60% of it is ferrite. It is closely related to, but much more popular than Alloy 255. In most environments, it surpasses 317L in crevice corrosion resistance. 2205 Duplex excels in chloride environments and resists hydrogen sulfide. 2205 Duplex has almost twice the strength of 316L. Due to the lower nickel and molybdenum content, it is less costly than Alloy C276. Among the places where 2205 Duplex is used include pressure vessels, heat exchangers and scrubbing systems.

The corrosion resistance comes from the addition of alloying material, mostly the chromium content. The ASTM A790 Pipes are resistant to pitting corrosion and crevice corrosion. The pipes could also be electric fusion welded.

This is the main reason why Super Duplex Flanges note an improvement of tensile strength over ferritic and austenitic steel grades.

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.

Grade 2205 is the most widely used duplex stainless steel grade. Fittings of this grade finds applications due to both their excellent corrosion resistance as well as their high strength.

All Duplex 2205 Seamless Pipe produced according to the ASTM A789 must be furnished in a heat treated condition.

ASTM A240 Type 2205 Duplex Sheet provides a maximum Brinell hardness value of approximately 290 in the annealed condition.

2507 is used for Chemical process industries, heat exchangers, vessels, and piping, desalination plants, high pressure RO-plant and seawater piping, mechanical and structural components, high strength, corrosion-resistant parts.

2205 duplex stainless tubing material, which is why it is referred to as a self-repairing layer.

The ASTM A182 F53 UNS S32750 Flange comes under the ASTM A182 specification for high temperature and high pressure services.

Additionally, Duplex 2205 is the most widely used duplex grade on the market. Duplex 2205 alloy is a nitrogen-enhanced duplex stainless steel alloy. The effect of nitrogen is to significantly increase the corrosion resistance of the alloy; especially in the as-welded condition.

ASTM A479 Duplex Steel UNS S31803 Nuts have excellent general corrosion resistance in a variety of aggressive chemicals including seawater and industrial acids. The microstructure of ASME SA 479 Duplex Steel UNS S32205 Hex Nuts consists of a mixture of austenitic and ferritic phases. Therefore, it exhibits the properties of austenitic and ferritic stainless steels.

Super Duplex Stainless Steel is known to have better stress corrosion, cracking resistance and mechanical properties than any other type of steel.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

A butt weld pipe fitting is designed to be welded on site at its end(s) to connect pipe(s) together and allow change in direction or pipe diameter, or branching or ending.

This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals, …) in a safe and efficient manner, over short or long distances.

ASTM A790 specified 2205 Stainless Steel Pipe ability to resist stress related corrosion cracking.

Duplex 2205 is a nitrogen enhanced duplex stainless steel designed to solve common corrosion problems encounutered with 300 series stainless steels.

2507 nuts are highly resistant to carbide-related intergranular corrosion due to their low carbon content (0.020% in weight).

On average, duplex stainless steel is about twice as strong as either ferritic or austenitic stainless steels. High toughness and ductility. Duplex stainless steel can be more easily formed under pressure than ferritic grades and also have superior toughness.

2507 (PREN 40-45), with 25-26 Cr and increased Mo and N compared with the 25Cr grades. A super austenitic-ferritic duplex stainless steel with exceptional strength and corrosion resistance ideal for chemical process, petrochemical, and seawater applications.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

Super duplex steel flanges are very good for servicing a severe corrosive atmosphere like offshore and marine applications.

Offering the industry an improved stainless steel corrosion solution, Duplex 2205 Bolts have good sulfide corrosion resistance, as well as chloride pitting and crevice corrosion superior to 317L. The combination of chromium, molybdenum and nitrogen provides Duplex 2205 bolts with good chloride pitting and crevice corrosion protection, which makes them useful in marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications.

The pressure-temperature ratings for ASTM A182 F53 flanges are the same as that for other duplex stainless steels.

The microstructure of ASME SA 479 Duplex Steel UNS S32205 Flat Washers includes a combination of ferritic and austenitic phases. ASTM A479 Duplex Steel UNS S31803 Gaskets have excellent general corrosion resistance in a variety of aggressive chemicals including industrial and seawater acids. Buy duplex stainless steel washers from us at leading market prices.

2507 is used for oil and gas industry equipment, offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, and injection and ballast water systems.

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.

Alloy 2205 duplex stainless steel sheet is particularly suitable for applications covering the -50¡ãF/+600¡ãF temperature range.