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Kaysen Steel Industry Co., Ltd.

Kaysen Steel Industry Co., Ltd.


Kaysen Steel Industry Co., Ltd.
HomeProductsVacuum Components / FittingsVacuum Flexible BellowsKF Flexible Bellows (Hose) Vacuum Bellows
KF Flexible Bellows (Hose) Vacuum Bellows
KF Flexible Bellows (Hose) Vacuum Bellows
KF Flexible Bellows (Hose) Vacuum Bellows
  • KF Flexible Bellows (Hose) Vacuum Bellows
  • KF Flexible Bellows (Hose) Vacuum Bellows
  • KF Flexible Bellows (Hose) Vacuum Bellows

KF Flexible Bellows (Hose) Vacuum Bellows

    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 1 Piece/Pieces
    Delivery Time: 15 Days

Basic Info

Standard: KF Standards

Sealing Material: Viton® Or Buna-N® O-rings

Temperature: 200ºC Maximum

Vacuum Range: 1×10-8 Torr

Sample Time: 3days

Application: Semiconductor/Food/Beverage

Material: SS304, SS316/316L

Surface: Standard Matt Finish

Size: KF10-50

Product: KF25 Vacuum Flexible Bellows,hoses

Additional Info


Productivity: 10000ton


Transportation: Ocean,Air

Place of Origin: China

Supply Ability: 10000ton

Certificate: CE,FCA,SGS,3A

HS Code: 7307230000

Port: Shanghai Port,Ningbo Port,Tianjin Port

Product Description

Product Description

KF Flexible Bellows (Hose) Vacuum Bellows Connection, KF25 (NW 25), Stainless Steel Bellow

We fabricate these KF flanged hydraulically formed bellows for HV systems from 300 series stainless steel hoses and 304L stainless steel KF (QF) flanges.
These KF Metal Hose Bellows Flex Coupling Vacuum Fittings follow ISO-KF standards and have a flange size of NW-25. They are unsheathed and butt welded. Commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges.

The main Vacuum products are KF, ISO and CF series elbow, tee, reducer, cross, vacuum bellows is suitable for various vacuum or vacuum system, at the same time can be custom-made non-standard parts, widely used in semiconductor, medical, solar photovoltaic, and other fields

Vacuum Bellows Feature :
Fabricated from thin 300 Series stainless steel

Flexible Bellows Connections Size: NW 10, NW 16, NW 25, NW 40, and NW 50.
Withstand many flexing cycles
Unbraided Hoses: Extend up to 10% beyond their live length and compress up to 15%
Braided Hoses: Braided sheath helps protect convoluted hose from damage
Short Hoses: Often used to correct minor component misalignments
Longer Hoses: Work as roughing lines
Short hoses are often used to correct minor component misalignments while longer hoses are ideal for use as roughing lines.
Thin wall hose and bellow assemblies are fabricated from Series 300 stainless steel
Hoses can be made compatible with KF or ISO "K" terminations

Product Features

KF Flexible Bellows (Hose) Stainless Steel Vacuum Bellows Hoses Features:



CLAMPS: Aluminum

O-Ring Material: Viton or NBR

Material: SS304, SS316

• Connect Size: KF10, KF16, KF25, KF40 & KF50

Vacuum range : 1×10-8 Torr
Temperature range : 150 °C(Viton) / 80 °C(NBR)

Quality Inspection
▪ PMI test to verify material grade
▪ Dimension controlling during fabricating and finished
▪ Visual and surface 100% examination before shipment
▪ Packed in carton box firstly, then in wooden case

Product Drawing

KF Flexible Hose

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Vacuum Fittings - Working Process

Our Service

1. Any question and inquires will be responded within 24 hours.

2. Professional technical team support OEM/ODM service.

3. Feedback efficiently for the whole trading process.

4. 100% inspection before shipment.

5. We are a manufactor (Forging workshop and CNC machining workshop )
6. We can supply KF(NW) Vacuum Flanges & Components, ISO Vacuum Flanges & Components, CF Vacuum Flanges & Components, Flexible Bellows, Vacuum Fittings, Vacuum Valves, each products are tested well by our strictly Quality Control System.

Business Card 4

Looking for ideal KF Flexible Hose Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the KF Flexible Bellows are quality guaranteed. We are China Origin Factory of KF Vacuum Flexible Bellows. If you have any question, please feel free to contact us.

Product Categories : Vacuum Components / Fittings > Vacuum Flexible Bellows

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