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.

Другие товары поставщика

	ASTM B111/ ASME SB111 COPPER ALLOY STEEL TUBE	ASME SB111C70600 Tube Copper-nickel alloy that resists seawater corrosion and has high antifouling properties against marine microorganisms. You ca...
	STAINLESS STEEL PIPE/TUBE	STAINLESS STEEL PIPE/TUBE Stainless steel pipe/tube is one of the most widely used in manufacturing and fabrication. Seamless and welded are the c...
	C44300 COPPER ALLOY STEEL TUBE	C44300 Copper Alloy Pipe ASTM B111 C44300 tube is widely used in the surface condenser, heat exchanger, and evaporators. The C44300 tube offers hi...
	NICKEL ALLOY STEEL PIPE /TUBE	Nickel alloy is one of the most useful materials for manufacturing technically superior nickel pipes and tubes for industrial applications. Their i...
	INCOLOY 800H/N08810 NICKEL ALLOY PIPE/TUBE	Incoloy 800H pipeis a slightly modified version of Incoloy 800 with the 800H grade possessing higher creep and rupture strength. The modification o...

Похожие товары

	Floral Garden Tools Set	Продавец: Dongyang Guorui Industry And Trade Co., Ltd.	Investing in a floral garden tools set not only enhances your gardening experience but also add...
	Rice Husk Pellet Machine	Продавец: Jiangsu Kingwood Industrial Co., Ltd.	● JWZL-420 is the most popular biomass/woodpellet machine of all the pellet mills offered by Ch...
	Греция-Генетические криобанки-Криоконсервация клеток	Продавец: Хэнань Тяньчжидао Биотехнология Лтд.	В наше время, когда технологии не перестают развиваться, с увеличением требований к криохранению ...
	Common Rail Fuel Injector Nozzle L500PBC	Продавец: 738347	Common Rail Fuel Injector Nozzle L500PBC 0 445 110 189 Injector Valve Set 0 445 110 190 Injector...
	Common Rail Fuel Injector Nozzle F00VX40014	Продавец: 738347	Common Rail Fuel Injector Nozzle F00VX40014 Common Rail Fuel Injector Nozzle F340 Common Rail ...