round bar 1.4501 super duplex bar bright round S32760 bar

A789 UNS S31803 and UNS S32205 are two grades of duplex stainless steel that are widely used in various industrial applications. These Duplex S31803 Seamless Pipes are known for their excellent corrosion resistance, high strength, and good weldability. A789 is a specification that covers seamless and welded tubes made from duplex stainless steel.

ASTM A240 Type 2205 Plate is a duplex stainless steel plate that is used extensively in various industries such as chemical processing, oil and gas exploration, and marine engineering. SA 240 GR 2205 Sheet is made from grade 2205 stainless steel, which is a combination of ferritic and austenitic steel.

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.

This heat treatment performed on the Duplex 2205 Pipe must be keeping with accordance to the specified temperature and quench conditions.

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.

El uso de tuberias sin costura ASTM A790 UNS S32205 (sin costura y soldadas) es adecuado para aplicaciones generales, pero la solucion principal que brindan es el agrietamiento por corrosion relacionado con la tension.

Duplex stainless steel fasteners are available in Super Duplex, Lean Duplex and Standard Duplex grades, each with specific properties for differenut applications.

La tuberia ERW se usa en aplicaciones que requieren una soldadura extensa para la instalacion. Los usos de la tuberia duplex ASTM A790 UNS S32205 no se limitan a aplicaciones industriales, tambien se pueden ver en aplicaciones domesticas de bajo costo.

ASTM A182 F53 flanges refer to flanges made from super duplex stainless steel 2507 (UNS S32750) by a hot forging process.

ASTM A240 Type 2507 Duplex Sheet is an alloy used in applications with high strength and corrosion resistance. The composition of the duplex 2507 sheet is approximately 25% chromium, 7% nickel and 4% molybdenum. This composition makes it resistant to crevice corrosion and chloride pitting.

Duplex 2205 has higher resistance to crevice and erosion corrosion than sus316L austenitic stainless grades.

We are suppliers of WNR 1.4410 Super Duplex Steel Weld Neck Flanges with matching stub-ends that withstand alkalis under higher temperatures.

The presence of ferrite in the duplex 2205 welded pipe is what provides for an enhanced performance of this stainless steel grade in caustic media containing environments.
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.”

The ASTM A790 Duplex Welded Pipes are an example of welded duplex pipe. There are different grades of duplex pipes with different mechanical properties. There are duplex, super duplex and lean categories in the Duplex Pipes varieties. The Seamless Duplex Pipes are both strong and is highly corrosion resistant.
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.”

ASTM A240 UNS S32750 plate is suitable for high tension and high corrosion environments.

La microestructura hibrida de la tuberia Super Duplex 2507 mejora su rendimiento.

Its impact strength or hardness properties inherited from the ferritic side make 2507 stainless steel round bar suitable for structural applications including bridge construction and more.

Duplex stainless steel pipes and fittings are generally less expensive because of the lower proportions of alloying elements used in the manufacture of duplex stainless steels. Compared to austenitic stainless steels, duplex stainless steels have higher yield strengths, so users can buy duplex pipes and duplex pipe fittings in relatively lower thicknesses.

2205 is the most widely used duplex (ferritic/austenitic) grade of stainless steel. It is used due to its excellent corrosion resistance and high strength. Over the years, many steel suppliers have made improvements to the standard duplex S31803 composition, and the resulting restricted composition range was recognized as UNS S32205 in 1996.

We are a manufacturer of Stainless Steel Round Bar, Formed Steel and Rebar, we supply bars such as 304, 304l, 316, 316l and 347. We are proud to have the largest share of stainless steel forming steel in the country.

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.

SA 815 S31803 Weld Fittings have exceptional chemical properties along with higher strength and good resistance to corrosion. Therefore this grade is used for fitting manufacturing. SA 815 S31803 Long/ Short Radius Elbow display outstanding resistance to pitting, crevice corrosion and have excellent weldability. They are perfect if one is looking for a sturdy pipe with good formability. ASME B16.9 WPS UNS S31803 Elbow also exhibits excellent resistance to acetic and marine environments.

Super Duplex is used in gas and oil industry, on offshore platforms, chemical processing equipment pressure vessels and boilers, in heat exchangers.

ASTM A790 Duplex 2205 Pipe are precise and used in sensitive applications.

The duplex steels are one type of stainless steels that have ferritic and austenitic phases in their metallurgic microstructure.

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.

Our Duplex Steel S31803 bar is an industrially processed nitrogen-modified steel that addresses common corrosion problems encountered with 300 series stainless steels.

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.

The equivalent proportions of their existence make it possible for the alloy to express qualities reminiscent of each steel type. Take austenitic steels, where the most basic grade, like 790 steel duplex pipe, has substantial corrosion resistance properties.

Super Duplex has all the benefits of other duplex steels, specifically the strength benefits of their biphasic structural composition of equal parts austenitic and ferritic stainless steel. This microstructure makes all duplex steels around twice as strong as regular single structure ferritic or austenitic steels, but Super Duplex has a higher chromium and molybdenum content, giving it considerably increased resistance to corrosion than its counterparts.

Duplex 2205 round steel contains 22% chromium, 3% molybdenum, and 5-6% nickel. In addition to excellent impact toughness and high strength, it also has high general, local and stress corrosion resistance.

For many applications where 300 series stainless steel is susceptible to chloride stress corrosion cracking, 2205 duplex stainless steel is a cost-effective solution. Stress corrosion cracking occurs when stainless steel is subjected to tensile stress while in contact with solutions containing chlorides. Elevated temperatures also increase the susceptibility of stainless steel to stress corrosion cracking.
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.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.52

The duplex structure results in improved stress-corrosion cracking resistance, compared with the austenitic stainless steels, and improved toughness and ductility, compared with the ferritic stainless steels.