.

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.



在线联系供应商

至: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED
Your E-mail:
消息正文:


Send to other suppliers

Other supplier products

TITANIUM ALLOY STEEL TUBE
TITANIUM ALLOY STEEL TUBE TITANIUM ALLOY STEEL TUBE Titanium is the ninth most abundant element in the earth's crust and the seventh most abundant metal. Using titanium all...
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...
ASTM B338/ ASME SB338 TITANIUM ALLOY STEEL TUBE
ASTM B338/ ASME SB338 TITANIUM ALLOY STEEL TUBE ASTM B338/ ASME SB338Titanium Tube (Ti Tube) has a superior strength-to-weight ratio and corrosion resistance is one of the common titanium product...
CARBON STEEL FITTING
CARBON STEEL FITTING Carbon steel has a higher level of carbon in relation to iron than other types of steel. This higher carbon content provides greater overall streng...
MONEL FITTING
MONEL FITTING Monel is a group of nickel (from 52% to 67%) and copper alloys, with small amounts of iron, manganese, carbon, and silicon. Monel is not cupronicke...
供应产品

Same products

Lz110 Air Suspension Centrifugal Blower/Energy Saving
Lz110 Air Suspension Centrifugal Blower/Energy Saving 卖方: Greentech International (Zhangqiu) Co., Ltd Air Suspension Bearing:Air suspension bearings use air buoyancy instead of lubricating oil, and u...
Manual Tile Cutting
Manual Tile Cutting 卖方: 浙江石井工具有限公司 One of the significant benefits of manual tile cutting is its cost-effectiveness. While automated...
玻利维亚-实验室杜瓦瓶-液氮泵
玻利维亚-实验室杜瓦瓶-液氮泵 卖方: 河南天之道生物科技有限公司 在追求精准与高效的现代实验室环境中,样本的妥善储存和液氮的安全输送是十分重要的。我们特此推出专为实验室样品储存设计的液氮罐与液氮泵组合,旨在为您的科研工作提供强有力的支持。 用于细胞储存的液氮杜...
Water soluble ink coating painting additive micronized wax
Water soluble ink coating painting additive micronized wax 卖方: Syntop chemical Co.,Ltd. MicroF_W168 is a water-based micronized polyethylene homopolymer. The average particle size of M...
伊拉克-实验室用液氮罐-液氮转移泵
伊拉克-实验室用液氮罐-液氮转移泵 卖方: 河南天驰仪器设备有限公司 在追求精准与高效的现代实验室环境中,样本的妥善储存和液氮的安全输送是十分重要的。我们特此推出专为实验室样品储存设计的液氮罐与液氮泵组合,旨在为您的科研工作提供强有力的支持。 用于细胞储存的液氮杜...