.

DUPLEX STEEL PIPE/TUBE

The microstructure of duplex seamless pipeis approximately 50% ferrite (body-centered cubic structure) and 50% austenite (face-centered cubic structure) crystal structure. The two phases coexist as a stable mixture, but this is different from two-phase alloys, where one of the two phases appears as a precipitate. The alloying elements in duplex stainless steel tubes are ferritic (eg chromium, silicon, molybdenum) or austenitic (eg carbon, nickel, nitrogen), which means that they favor the formation of the ferritic and austenitic phases, respectively. As a professional duplex stainless steel pipe manufacturer in China, Yuhong Group provides quality super duplex tubing solutions.

DIFFERENT TYPES OF DUPLEX STEEL PIPE

Duplex stainless pipeare part of the stainless steel family. Duplex( austenitic-ferritic) means their metallurgical structure consists of two phases. Compare with the normal 304 316 stainless steel, they can provide better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, and higher strength. And it has higher Chromium 20%-28%, and lower nickel, up to 9% and 0.05-0.50% than austenitic stainless steel, which gives good cost benefits.

DUPLEX STAINLESS STEEL PIPE GRADES

The most widely used is ASTM ASTM (American Society for Testing and Materials International), and ASME(American Society of Mechanical Engineers). And the general standard for the duplex stainless steel seamless or welded tube or pipe can be ASTM A789/ASME SA789, ASTM A790/ASME SA790, ASTM A928/ASME SA928. They give very detailed requirements on the material, test, and others.

DUPLEX SS SEAMLESS PIPE APPLICATIONS

Pipe duplexis known for its excellent combination of good mechanical properties and high corrosion resistance. The wide range of advantages means that it can be used in many different applications: for example, chemical processing, transport, and storage in the industrial sector, such as seawater heat exchange for high chloride environments and production of chemical containers. The SS duplex pipe can also be applied to pipelines for oil and gas production and transportation, such as oil and gas exploration and offshore drilling platforms.

Nickel alloys are the most outstanding and useful materials in the manufacture of pipes and tubes for industrial applications. Their inherent properties make them versatile. Nickel alloys are particularly resistant to corrosion and can be used in high-temperature environments. Because nickel alloys are highly ductile, they can be processed very efficiently into pipes and tubes while maintaining the corresponding strength. This makes them ideal for heat exchangers in chemical processing. Nickel-based tubing is also used in steam generators, aircraft systems, and oil and gas extraction.

DUPLEX STEEL PROPERTIES

At elevated temperatures, mechanical properties such as strength and toughness, as well as corrosion resistance, of dual-phase steels are reduced. This phenomenon is called embrittlement. The worst temperature at which embrittlement occurs is 475 °C; however, the formation of α' phases can begin to occur at temperatures as low as 300 °C, which limits the maximum service temperature for dual-phase steels.

Typical duplex pipe materialhas higher yield strengths than typical martensitic, austenitic, and ferritic stainless steels. However, since intermetallics begin to precipitate above 300 °C and become brittle near cryogenic temperatures, their operating temperature range is narrow.

There are many ss pipe suppliers, but we are one of the best choices for you.



Send product request

To: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

COPPER ALLOY STEEL TUBE
COPPER ALLOY STEEL TUBE COPPER ALLOY STEEL TUBE Copper alloy is an alloy composed of pure copper as the matrix and one or several other elements added. Pure copper is pur...
NICKEL ALLOY STEEL PIPE /TUBE
NICKEL ALLOY STEEL PIPE /TUBE NICKEL ALLOY STEEL PIPE /TUBE Nickel alloy is one of the most useful materials for manufacturing technically superior nickel alloy pipe for indust...
DUPLEX STEEL FITTING
DUPLEX STEEL FITTING In duplex pipe fittings, the ferrite phase and the austenite phase account for about half of its solid solution structure, and the content of the l...
S31803 DUPLEX STEEL PIPE/TUBE
S31803 DUPLEX STEEL PIPE/TUBE UNS S31803is also known as grade 2205. The duplex stainless steel family includes a wide range of different materials, however, the s31803 duplexis...
NICKEL ALLOY STEEL PIPE /TUBE
NICKEL ALLOY STEEL PIPE /TUBE Nickel alloys are one of the most useful materials for manufacturing technically superior nickel pipeand nickel tubefor industrial applications. Th...
All supplier products

Same products

OEM  Car Parts Alternator for Toyota
OEM Car Parts Alternator for Toyota Seller: Foshan Bohua Auto Parts Co., Ltd Automobile alternator, which is the main power supply of the automobile, is driven by the engine....
OEM  Parts of Alternator in Car for Toyota
OEM Parts of Alternator in Car for Toyota Seller: Foshan Bohua Auto Parts Co., Ltd OEM Parts of Alternator in Carfor Toyota Automobile alternator, which is the main power supply ...
OEM  Alternator Wholesale for Toyota
OEM Alternator Wholesale for Toyota Seller: Foshan Bohua Auto Parts Co., Ltd Automobile alternator wholesale, which is the main power supply of the automobile, is driven by t...
OEM  Automotive Alternator Parts for Toyota
OEM Automotive Alternator Parts for Toyota Seller: Foshan Bohua Auto Parts Co., Ltd The OEM part number refers to automotive alternator partsspecifically designed for Toyota vehicl...
OEM  Auto Parts Alternator for Toyota
OEM Auto Parts Alternator for Toyota Seller: Foshan Bohua Auto Parts Co., Ltd Auto parts alternator, which is the main power supply of the automobile, is driven by the engine....