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  • Carbon Steel Pipe Fittings

    Posted: 11/29/2022 11:00:36  Hits: 11
    Carbon steel pipe fittings with higher carbon content have better hardness and strength. They are used to connect two pipes with the same nominal diameter to make the pipe turn 90 degrees.   Classifications of carbon steel pipe fittings Carbon steel can be divided into carbon structural steel,...
  • The Forming of the Reducing Tee

    Posted: 08/22/2022 03:30:27  Hits: 29
    Nowadays, with the rapid development of aviation enterprises, there are many applications of tee fittings to the system of aircraft. In traditional applications, the butt welding process or fillet welding process is used for forming the tee, as shown in Figure 1. Figure (a) is a butt welding that welds...
  • The Overview of Development of Hydroforming

    Posted: 07/14/2022 09:48:11  Hits: 11
    Hydroforming is a plastic forming process in which a certain force-transmitting medium fills the cavity of the tube blank and forms the tube from the inside out. Hydroforming is currently used as a precision forming technology for manufacturing some thin-walled tube parts with complex shapes, and it...
  • The Development of Tees

    Posted: 06/28/2022 10:20:38  Hits: 9
    A tee is an important part of the pressurization and conveying system of aircraft such as launch vehicles. It has functions of gathering and diversion of the multi pipes in the overall system. However, in the actual flight process, it is subject to certain pressure and structural stress. The quality...
  • Advantages of Hydroforming Pipe Fittings

    Posted: 06/15/2022 11:40:06  Hits: 7
    With the improvement of science, technology and productivity, the development and progress of the manufacturing industry to the intelligent manufacturing industry, various industries are undergoing rapid changes, showing the power of China to the world and making intelligent manufacturing go global,...
  • The Connection between Reducers of Heat Exchangers & Dissimilar Steel Pipes

    Posted: 05/23/2022 08:46:28  Hits: 3
    Formulating the construction plan 1. Principles of welding carbon steel 20 and stainless steel 304 dissimilar steel According to the analysis of the weldability of austenitic stainless steel 304 and ferritic carbon steel 20 dissimilar steel, hot cracks easily happen when the two are welded, and the...
  • The Connection Scheme between Reducers of Heat Exchangers and Pipes

    Posted: 05/09/2022 07:45:34  Hits: 12
    Abstract: When a chemical plant is overhauled, two sets of overlapping fixed tube sheet heat exchangers are replaced. The carbon steel flanges at the inlet and outlet of the tube box are of different materials and specifications than the external stainless steel pipelines. In order to ensure that the...
  • Materials of Pipe Fittings for Resisting Hydrogen Sulfide Stress Corrosion

    Posted: 04/22/2022 09:27:49  Hits: 7
    For the selection and evaluation of materials used in equipment designed and manufactured according to the elastic design criteria, the materials that have been evaluated in accordance with ISO 15156-2 (GB/T20972.2) and ISO15156-3 (GB/T20972.3) or NACE MR0175-2003 standards can be used. The environmental...
  • Types and Failure Modes of Gaskets

    Posted: 04/16/2022 10:09:48  Hits: 18
    Generally, there are three main leakages for fluids at the sealing port, including leakages at the interface, leakages caused by penetration, and leakages caused by a blow-out, as shown in Figure 1.   The leakage at the interface is the leakage along the gap between...
  • The Failure Analysis of the Stainless Steel TP304 Tee (Part Two)

    Posted: 03/30/2022 02:38:49  Hits: 2
    1.4 The microstructure analysis Take another batch of the qualified tees with the same specification to compare with the cracked tees, and the sampling positions are the positions perpendicular to the main pipe axis and close to the root of the branch pipe. Figures 4a and 4b are the metallographic...

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