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Why choose stainless steel 304 butt welding flange

2020-11-25 10:01:15   COMMENT:0 HITS:
  Stainless steel flanges are commonly used in various corrosive environments. However, in the design documents of some units, as long as DN≤40, regardless of various materials, all types of sockets are used. In the design documents of other units, stainless steel pipes, no matter how small the caliber, also use butt-welded pipe fittings instead of socket pipe fittings.

  When there are crevices on the surface of metal components due to foreign matter or structural reasons (usually 0.025-0.1mm), it is difficult for the corrosive medium inside the crevices to migrate, and the corrosion of the metal is caused, then crevice corrosion . Crevice corrosion often becomes the cause of other corrosion, so engineering strives to avoid the occurrence of crevice corrosion. Since the medium is prone to crevice corrosion, the existence of crevices should be avoided in the design of the pipeline structure.

  It is precisely because of the gaps in the socket connection that some units, in order to avoid crevice corrosion, often use butt welding for the corroded stainless steel flanges. The welding process is controlled during welding to ensure quality and avoid the use of socket fittings .

  304 is a relatively versatile stainless steel, which is widely used to make equipment and parts that require good comprehensive performance.

  304 is equivalent to ten years of 0Cr19Ni9 stainless steel. 304 contains 19% chromium and 9% nickel.

  304 is a widely used stainless steel and heat-resistant steel. Used in food production equipment, Xitong chemical equipment, nuclear energy, etc.

  304 stainless steel butt welding flange is a widely used chromium-nickel stainless steel, which has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavily polluted areas, plate heat exchangers, bellows, household products, building materials, chemicals, food industries, etc. It needs to be cleaned and corroded in time. It is suitable for food processing, storage and transportation. Has good processing properties and weldability.

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