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15.11.2017

The 11th International Tube Industry Expo

Time: November 20-22, 2017 Location: Shanghai New International Expo Center Organizers: China Steel Structure Association Steel Pipe Branch, Shanghai Steel Pipe Association and Yangtze River Delta Pip...
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Technical Articles
  • Posted: 12/25/2015 10:40:06  Hits: 190
    There are several methods of quenching the OCTG pipes, dipping, axial injection, laminar jet and laminar jet combined with axial injection. It will form the centrifugal force when quenching OCTG pipes and the centrifugal force will cause the deformation on pipes, which has serious influence on the quality and applica...
  • Posted: 12/16/2015 10:39:16  Hits: 174
    There are some features about sulfate electro galvanizing technology.   1. Optimization of sulfate galvanizing The most important advantage of sulfate galvanizing is that the current efficiency can up to 100%, and has a fast deposition rate which is incomparable to other galvanizing technique. Since the cry...
  • Posted: 12/03/2015 10:07:15  Hits: 209
    With the constant development of industrial technology, the industrial equipment also has been developed rapidly. As a newly developed heat exchange tube with high efficiency, the nodes heat exchange tube has replaced the traditional ones. This new heat exchange tube has some unique advantages.   1. High coe...
  • Posted: 11/27/2015 10:41:39  Hits: 214
    According to the applications, seamless steel pipe can be classified into several major types.   1. GB/T8162-1999: structure seamless steel pipes. This type of pipe mainly used in general structure and mechanical structure. The representative materials are: carbon steel, steel of NO.20 and 45, alloy steel of ...
  • Posted: 11/11/2015 11:00:22  Hits: 197
    This article introduces the extensive applications of ductile iron pipes in detail.    1. Fire protection Ductile iron pipes have three times of safety factor in design, not only can protect the whole fire protection system, the fire valves and fire hydrants are also completely made of ductile iron pi...
  • Posted: 11/05/2015 09:53:45  Hits: 252
    This article introduces several major types of welded pipes, including their applications and standards in detail.   1.Welded pipe for delivering low-voltage fluid (GB/T3092-1993). This kind of pipe also known as general welded pipe, or black pipe, which is mainly used for delivering low-voltage fluid, ...
  • Posted: 07/08/2015 09:00:25  Hits: 408
    Chemical cleaning: chemical cleaning of pipe refers to temporarily transformation of the pipeline using chemical agents, adopt chemical cyclic cleaning using temporary pipeline and circulating pump station from both ends of the pipeline. The technology has features such as strong flexibility, high speed, thorough cle...
  • Posted: 06/30/2015 16:16:31  Hits: 427
    Stainless steel pipe and other products will undergo forming, welding and heat treatment in the manufacturing process, which makes the surface contaminated. Therefore, the passivation treatment is an important and indispensable process. Basically there are following common methods in actual application. Oxide ski...
  • Posted: 06/18/2015 16:38:44  Hits: 647
    In general, hardness indicators of Brinell, Rockwell and Vickers hardness index are adopted to measure the hardness of steel. 1. Brinell Hardness In stainless steel tube standard, Brinell Hardness is the most commonly used, often impress diameter is applied to express the hardness of the material, which is intu...
  • Posted: 06/12/2015 15:20:39  Hits: 351
    Seamless steel pipe is a kind of strip steel with hollow section and no seams around. Steel pipe has a hollow section, a large number of which are used as pipes transforming fluid, such as oil, natural gas, coal gas, water and some solid materials, and so on. Compared with solid steel such as round steel, steel pipe ...