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Duplex, lean duplex and super duplex stainless steels –twice as strong as austenitics
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ASTM A928 / A928M : Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
ASTM A790 / A790M: standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
B1.20.1 Pipe Threads, General Purpose
B36.10 Welded and Seamless Wrought Steel Pipe
B36.19 Stainless Steel Pipe
Product Name: Duplex Stainless Steel Seamless Pipes
SEAMLESS STAINLESS STEEL PIPE
SIZES: 1/8″NB – 24 “NB
GRADES: 304L, 321, 316
Seamless stainless steel pipe is fully softened & descaled. In 5-7 metre random lengths. Tolerances & testing to ASTM A 312/ASME SA312-A530. Conforming to NACE Standard MR-01-75(Latest Revision) Certificate to DIN 50049-3.1.B./EN 10 204-3.1.B.
SEAMLESS AND WELDED DUPLEX PIPE/SEAMLESS SUPER DUPLEX PIPE
SIZES: 1/2″NB – 8″NB (Seamless Duplex/Super Duplex)
SIZES: 6″NB – 24 “NB (Welded Duplex)
Duplex Grade. Seamless Ferritic/Austenitic Stainless Steel Pipe to ASTM A790 UNS S31803 (Duplex) UNS S32760 (Super Duplex) and ASTM A928 UNS S31803 (Welded Duplex). Cold/Hot finished, solution annealed & descaled in random lengths 5-7.5 metres. Conforming to NACE Standard MR-0175(Latest Revision)
Enquiries are welcome on grades such as 904L, 316TI, 347H, 304H and 6 Moly, 310 and 317L. We are also able to offer other grades on application including Duplex Fittings and Super Duplex Fittings.
Model Size for the round pipes :
Huge stock of standard Duplex Stainless Steel pipes is in ready stock.
If you are in the market for the best in Duplex Stainless Steel Seamless Pipes, look no further than PIYUSH STEEL. We have an extensive production range in which we offer pipe sizes from ½ of an inch to 144 inches (Nominal Pipe Size), as well as tubing sizes on request. In addition to all these great capabilities, we have unmatched wall thickness, length and testing.
Duplex Stainless Steel Seamless Pipes delivered with a 3.1 certificate. we can perform the tests required to issue a 3.2 certificate, or a CMTR in accordance with the ASME III Code.
Lot of emphasis is placed on the packing and packaging. The Duplex Stainless Steel Pipes are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps. Caps / Bushing are made available to the ends on request of the buyer.
So, besides the fact that we can arrange freight transportation for you, we can before that:
- specifically mark parts or packages;
- provide for a special packing according to what is required by the shipping method or by you.
We mark the Duplex Stainless Steel Seamless Pipes as needed with the most suitable marking technique.
When packaging and packing, our experienced warehouse staff systematically takes the greatest precautions for your Duplex Stainless Steel Seamless Pipes to be optimally protected during transportation. We pack the Duplex Stainless Steel Seamless Pipes according to the appropriate method: strapped pallet, wooden crate, overseas packing (ISPM15).
|2205/2205D||S31803/S32205||Duplex 2205/2205D is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.|
|2205||S31803||Duplex 2205 is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.|
|2205D||S32205||Duplex 2205D is used in environments where resistance to general corrosion and chloride stress corrosion cracking is important.|
Piyush Steel is mahnufacturers, stockiest & suppliers of Duplex Stainless Steel Pipes. Duplex Stainless Steel Pipes have special quality finishing and duress for long life, high pressure and zero defects.
|Alloy||UNS Designation||Werkstoff NR.||Specifications*|
Our duplex innovation is unmatched in the industry and our offering covers a full palette of duplex stainless steels for use in diverse industries and applications. The duplex grades LDX 2101® and 2304 are referred to as lean duplex grades. Typical applications are storage tanks, bridges, water heaters and reinforcement bars. The corrosion resistance is comparable to the standard austenitic grades like 4301 and 4404 respectively or high alloyed ferritics like 4521. Grades 2507 and 4501 are regarded as super duplex grades. They are highly alloyed and have a corrosion resistance comparable to high performance austenitics like 254 SMO®. Typical applications for super duplex are desalination plants, seawater systems, flue-gas cleaning, umbilicals, storage tanks and pressure vessels.
Duplex grades have a ferritic-austenitic microstructure, with a phase balance of approximately 50% ferrite and 50% austenite. Duplex grades combine many of the beneficial properties of ferritic and austenitic stainless steels. The duplex microstructure contributes to the high strength and high resistance to stress corrosion cracking.
Duplex stainless steels generally have good weldability and can be welded using most of the welding methods used for austenitic stainless steels:
- Shielded metal arc welding (SMAW)
- Gas tungsten arc welding TIG (GTAW)
- Gas metal arc welding MIG (GMAW)
- Flux-cored arc welding (FCW)
- Plasma arc welding (PAW)
- Submerged arc welding (SAW)
- Laser welding
- Resistance welding
- High-frequence welding
Duplex stainless steel grades are superior to standard austenitics with regard to stress corrosion cracking resistance, and duplex grades are also good in a number of acidic and alkaline environments.
About Piyush Steel: We continue to service and supply the oil, gas, filtration, refrigeration, refining, petrochemical and offshore industries, on a global scale. We are able to supply pipes, fittings, flanges, valves and other consumables in all dimensions, tolerances, and specifications. Piyush Steel manufactures, stocks and supplies a range of Duplex Stainless Steel & Super Duplex Products. The products are manufactured to conform to American and British design specifications.