Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel.When duplex stainless steel is melted it solidifies from the liquid phase to a completely f ...

Duplex stainless steel is a kind of stainless steel with dual phase microstructure of ferrite and austenite. The proportion of ferrite and austenite in solution structure is about 50%, and the content of less phase is more than 30%. The metallographic stru ...

Hebei Haihao Group specialized in flange and pipe fittings. Carbon steel pipe fittings is an environmentally friendly material. Compared with welding operations and threading operations, carbon steel pipe fittings-site installation is very convenient. Low ...

Pressure (psig) and temperature (deg F) ratings for A-53 B and A-106 B, A333, A334 and API 5L carbon steel pipes – temperatures ranging 100 °F – 700 °F Ratings calculated (see below the table) according ASME B31.3-2002 Table K-1 for plain end s ...

316Ti stainless steel has traditionally been designated by German engineers and users, the original steel grade of the UK is 320S31, which is basically a standard carbon 316 stainless steel with titanium stability. At the temperature range of 425 – 8 ...

Cast flanges can be manufactured in various kinds of complex shapes which are difficult to be obtained for the flanges which are produced by other manufacturing methods. Cast flanges have very low costs, which make them much cheaper than forged flanges. T ...

Bolts, screws and studs are used extensively in the manufacturing industry. Although similar in appearance, however, each item has its own unique purpose and characteristics. To learn more about the nuances between bolts, screws and studs — and which one i ...

Magnetic particle detection is applicable to the following range: 1.It is suitable for the detection of surface and near-surface defects of ferromagnetic materials, such as cracks with extremely narrow gap between surface and near-surface and other defects ...

Magnetic particle detection is a method of observing defects by using magnetic particle as display medium. According to the type of magnetic powder medium applied during magnetization, the detection methods are divided into wet method and dry method. Accor ...

With the deepening and development of the reform and opening up, China’s magnetic particle detection technology has developed rapidly, and the standardization work has made important progress. With the development of digital technology, magnetic powd ...

Radiographic methods commonly used in the industry are X-ray inspection and gamma ray inspection. Refers to the use of electromagnetic waves to detect metal workpieces, similar to X-ray. The passage of the ray through the material to the backsheet will res ...

High frequency welding principle: With the skin effect of the high-frequency current, the high-frequency electric energy can be concentrated on the surface layer of the weldment,and the proximity effect can be used to control the position and range of the ...

In order to ensure the safe operation of the products (pipes, vessels, pipe fittings, etc.) and to ensure their strength and sealing performance, it is generally higher than the working pressure (according to the regulations, the working pressure can be 1. ...

Radiographic inspection is a method of using a certain ray to check for defects inside the weld. Commonly used rays are X-rays and gamma rays. X-rays and gamma rays can pass through metal materials to varying degrees, and produce photosensitivity to photog ...

Solid solution treatment refers to the heat treatment process in which the supersaturated solid solution is obtained by heating the alloy to the high temperature single-phase region and keeping the temperature constant so that the excess phase can be disso ...

Hebei Haihao Group specialized in flange and pipe fittings. Below is the detailed information of seamless and welded eccentric reducer. Forming process: cold pressing Size range: Seamless, DN15 – DN600 (1/2″~24″); Welded, DN15 – DN1 ...

Hebei Haihao Group specialized in flange and pipe fittings. Below is the detailed information of seamless and welded concentric reducer. Forming process:cold pressing Size range: Seamless,DN15 – DN600 (1/2″~24″); Welded, DN15 – DN12 ...

A pipe elbow, on the other hand, is a specific, standard, engineered bend pre-fabricated as a spool piece and designed to either be screwed, flanged, or welded to the piping it is associated with. An elbow can be 45o or 90o. There can also be custom-design ...

A pipe bend is the generic term for what is called in piping as an “offset” – a change in direction of the piping. A bend is usually meant to mean nothing more than that there is a “bend”– a change in direction of the piping (usuall ...

The difference between ASTM A53 pipe and ASTM A106 pipe in spec scope,pipe chemical composition, mechanical properties (tensile & yield strength etc),pipe type. Scope ASTM A53 is Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coate ...