Vacuum Bellows

OriginZhengzhou, Henan, China
Nominal diameterDN10~DN300

Vacuum bellows
Product Description

Vacuum bellows is a kind of axisymmetric tubular shell, its generatrix is in shape of corrugation, mainly used for compensate equipment or pipeline’s axial and lateral displacement under vacuum environment. Because of its geometrical shape, vacuum bellows length can be different, length elongation under drawing force, lengthen shorten under compressing force. Bellows lengthen and flexible value is determined by acting force value and direction, bellows property and other parameters. Vacuum bellows is different from plate type pipe, expect for strength and stiffness, it has larger flexibility and higher anti-fatigue performance, this makes the vacuum bellows widely used in petroleum, chemical engineering, petrifaction, instrument, aerospace, electric power, cement and metallurgy industries. Vacuum bellows has thin tube wall, high sensitivity, suitable for low pressure environment.

Basic Types:

According to different corrugation shape, vacuum bellows can be divided into spiral type and annular type. For spiral type, its corrugation is configured in spiral status, all corrugations can be linked by one single spiral line; as for annular vacuum bellows, the corrugation is closed circle shape. Annular vacuum bellows can be divided into U type, C type, S type, V type, Q type and so on. To enhance loading capacity, multi-layer(mostly double layers, also three layers) bellows and reinforcing rib bellows come into being. Each vacuum bellows of our factory is detected by helium mass spectrometer leak detector, quality ensured.

Product Features:

  1. Strong external pressure resistance ability;
  2. Low construction costs;
  3. Easy to construct;
  4. Good low temperature resistance, shock resistance;
  5. Good chemical stability;
  6. Long service life.


Model L End Joints
KF-16 300-1000 KF-16
KF-25 300-1000 KF-25
KF-40 300-1000 KF-40
KF-50 300-1000 KF-50
KF-10/16 300-1000 KF-10/16
KF-16/25 300-1000 KF-16/25
KF-25/40 300-1000 KF-25/40
KF-40/50 300-1000 KF-40/50
product details


Vacuum bellows widely used in petroleum, chemical engineering, petrifaction, instrument, aerospace, electric power, cement and metallurgy industries.


our service

Pre-Sales Service

  1. According to product’s using condition, technicians will offer rationalization;
  2. Provide detailed product performance specification;
  3. Provide professional quoted price;
  4. Provide 24-hour technical consulting reply.

In-Sales Service

  1. Begin to supervise from raw material, its qualified rate can reach to 100%;
  2. Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
  3. Provide product’s inspection record of key junctures to customers;
  4. Provide production schedule photos to customers at regular intervals;
  5. Package and transport products strictly accordance with export standard.

After-Sales Service

  1. Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
  2. When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product’s standard component and sealing component;
  3. During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product’s running state in time. Assist customers to install and adjust products until customers are satisfied;
  4. If product has malfunction during operation period, we’ll offer you satisfied answer in time. We’ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
  5. Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.


  1. What's the connection method of vacuum bellows?
    Chuck connection.
  2. What diameter you can produce?
    The minimum DN10mm, maximum DN300mm.
  3. Can the product be tested and provided with a pressure test report?
    Yes, it can be.
  4. Whether the product can be provided with raw materials inspection certificate?
    Yes, it can be.
  5. Can you provide flaw detection?
    Yes, but you need to tell us in advance and responsible for detection fee.
  6. Can you provide installation instructions?
    Yes, we can.

customers packaging & shipping

packaging & shipping


  1. Carton+wooden cases.
  2. Customized packaging can be available.


  1. We can ship the goods to you by International Express such as DHL,UPS,TNT,EMS and so on.
  2. You can also choose the appropriate one based on your timeline and budget.
  3. You can choose to use your own shipping agent.
Shipping method Note
Express Door to door, very convenient, don't need to clearance or pick-up
By air Airport to airport, you need to do the customs clearance and pick up the goods at your local airport, which you can have a local shipping agent to do for you.
By sea Port to port and you need to do the customs clearance and pick-up the goods at your local port, which you can have a local shipping agent to do for you.


  1. Our company has a professional flaw detection team, can be real-time monitoring the quality of product.
  2. The production process is all-round monitoring to ensure that each production process are under control.
  3. Raw material reserves sufficient to timely delivery.
  4. Cooperate with many universities in China to ensure the advancement of product technology.
    Chanzhi Chanzhi5.3.2