PERFORMANCE

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  Advantage:

  1. Compensation for thermal expansion
  2. No reverse thrust
  3. Good high temperature resistance, corrosion resistance
  4. Good sealing performance
  5.Light body, simple structure, convenient installation and maintenance
  6. Low price and excellent quality

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  Principle of movement:

  The 304Lstainless steel bellows expansion joint can be stretched in the axial direction and also allows a small amount of bending. The 304 bellows is a commonly used axial corrugated expansion joint for axial length compensation of pipes. In order to prevent exceeding the allowable compensation amount, a protective pull rod or a guard ring is disposed at both ends of the corrugated compensator, and a guide bracket is disposed on the pipe connecting the two ends of the protection rod or the guard ring.

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  Description of materials :

  304Lstainless steel material characteristics: It is a widely used steel with good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Stamping bending and other hot working, no heat treatment hardening phenomenon (no magnetism). As a low C 304 steel, its corrosion resistance is similar to that of 304 steel under general condition, but after welding or stress relief, its grain boundary corrosion resistance is excellent. In the case of treatment, it can also maintain good corrosivity, generally with less than 400 (non-magnetic).

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  Structure:

  Bellows: in order to have a longer service life, all the products are made of 304 stainless steel and 304L, and all kinds of spectrometers are supported.
  Connection flange : the flange is made of stainless steel 304, 304L material
  Limit lug: all limit lugs are made of larger and thicker size
  Limit nut: all nuts adopts 304 material

WORKING PRINCIPLE

PRODUCT PARAMETERS

NOTES:

1. Flange is available with DIN Standard,ANSI Standard,JIS Standard,and BS Standard.
2. Please sent us letter and drawing for customization if you have special requirements.

PRODUCT ALBUM

INSTALLATION INSTRUCTIONS

1. It should be noted that the metal expansion joint does not absorb torque, so it is not allowed to be twisted when installing stainless steel bellows.
2. 2.In addition to the pre-tension or “cold-tight” deformation required by the design, it is strictly prohibited to use bellows deformation method to adjust the deviation of the installation pipeline, so as to avoid affecting the normal function of the metal bellows, otherwise it will reduce its service life and increase the load of the pipeline, equipment and supporting components.
3. The insulation layer should be made on the outer protective jacket of the metal bellows, not directly on the bellows.
4. During installation, no welding slag is allowed to splash on the surface of bellows, causing other mechanical damage to the bellows.
5. The bracket must meet the design requirements. It is strictly prohibited to test the pressure in the pipeline before the bracket is installed in order to avoid pulling it out.
6. All moving parts of the stainless steel 304L metal bellows shall not be caught or restricted by the external components.