hex bolt DIN931 933 duplex 2205 bolt S32205 bolt

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

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 .

Astm A790 Uns S31803 grade pipes and tubes can be cold-rolled to give them enhanced properties and good resistances in different systems.

2507 Duplex is highly resistant to uniform corrosion by organic acids such as formic and acetic acid.

The yield strength is also higher, allowing component designers to reduce section size for load-bearing applications.

Duplex 2205 Tube may at times exhibit magnetic behavior because the microstructure of its alloy contains about 50% ferrite.

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

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.

The 2205 Duplex Stainless Pipe exhibits magnetic properties in certain environments.

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.
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 B36.53

They have a design that allows for the pipes to pass through the flange and locate the correct point for connection. The ASTM A182 grade F53 WNRF Flange has a welded neck raised face.

Super Duplex 2507 Lock Washers has excellent corrosion resistance in marine environments.Lock washers are designed to be tightened to a required torque beneath an ordinary fastener. They exert a spring tension that keeps the fastener from vibrating loose. They are often attached to the nut side of the fastener.

Duplex UNS S32205 fasteners are widely used in construction and other industrial applications. We offer these types of fasteners in differenut thicknesses and tolerance limits for a variety of industrial applications.

The 2205 gasket is known as a duplex stainless steel gasket because it has a combination of ferrite and austenite and can be made into fasteners due to its high corrosion resistance. It has higher corrosion resistance than 316 stainless steel and is also highly resistant to stress corrosion and chloride cracking. 2205 has been determined to be cost effective because it is only 5% nickel and is significantly less expensive than Hastelloy C276 fasteners.

ASTM A479 Duplex Steel UNS S32205 Nuts have good weldability and can be welded by most common welding methods such as shielded metal arc welding, gas tungsten arc welding, plasma arc welding and submerged arc welding. Buy Duplex Stainless Steel Nuts from us at leading market prices.

Super Duplex Stainless steels, which combine high strength and excellent corrosion resistance in many environments, have found applications in chemical and process industries.

2205 flange has good sulfide stress corrosion resistance and high strength and good fatigue resistance.

S31803 has been supplemented by S32205 (F60) which has a higher minimum Ni Cr and Mo.

2507 is a super-duplex (austenitic-ferritic) stainless steel for service in highly corrosive conditions.

Super Duplex Stainless Steel 1.4410 Nuts?is a super duplex stainless steel with 25 percent chromium, 4 percent molybdenum, and 7 percent nickel. High molybdenum, chromium and nitrogen content in?Super Duplex 2507 Hex Nuts?help the material withstand pitting and crevice corrosion.?

The structure of 2205 duplex stainless steel consists of a pool of austenite surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. 2205 is often referred to as the workhorse grade and is the most widely used grade in the duplex stainless steel family.
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 B36.66

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.

Super Duplex Steel UNS S32760 are dual phase austenitic-ferritic duplex fasteners manufactured from alloy containing chromium, nickel and molybdenum with restricted carbon content and minimum PREN42. Zeron washers have high strength, resistance to pitting, stress corrosion cracking, erosion and corrosion fatigue, crevice corrosion resistance.

UNS S32760 (F55, 1.4501) is a high alloy super duplex stainless steel mainly used in a variety of strongly corrosive environments. S32760 has strong strength and corrosion resistance and is mainly used in chemical processing, petrochemical and subsea equipment.

Duplex 2205 stainless steels are called “duplex” because they have a two-phase microstructure consisting of ferritic and austenitic stainless steel grains. When duplex stainless steel melts, it solidifies from the liquid phase to a fully ferritic structure. As the material cools to room temperature, about half of the ferrite grains transform into austenite grains (“islands”). The result is a microstructure of approximately 50% austenite and 50% ferrite.

The yield strength of duplex stainless steel is twice that of austenitic stainless steel. This feature allows designers to reduce weight when designing products, making this alloy more cost-effective than 316, 317L.

Compared to 317L stainless steel, duplex steel has excellent resistance to chloride pitting and crevice corrosion. The alloy has excellent corrosion resistance to seawater and most concentrations of sulfuric acid. In addition, it is resistant to sulfide stress corrosion cracking (sour gas environments)

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

Duplex steel alloys have the properties of austenitic and ferritic stainless steels. This is because they have nearly equal proportions of dual microstructural phases (austenite and ferrite) in the annealed condition.

A Super Duplex 2507 Pipe has outstanding resistance to corrosive and oxidative media.

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

Seamless Pipes also execute properties like high strength and resistance to corrosion from organic acids. Also, these Pipes can withstand inorganic acids and chloride 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.”