Welded Metal Bellows


Custom manufacturing of metallic bellows is our major area of expertise and our specialty service. We utilize the world's largest clean room dedicated to the assembly of welded metal bellows. We provide the highest quality metal bellows for the most stringent applications.

  • As a custom bellow manufacturer, we work in coordination with original equipment manufacturers (OEMs), understand their needs, and incorporate their specifications in bellows designing and manufacturing.
  • Our fully automated, state-of-the-art cleaning and rinsing lines guarantee ultra-clean parts. Certified electro-polishing and passivation lines are also present to cater to special applications.
  • Our “primary operations machine shop” maintains an inventory of stainless steel bars, tubes, and plates, and high nickel alloys to machine custom flanges and components. These alloys are stored in a thermostatically controlled environment that conforms to raw material storage norms.
  • Our milling & CNC turning centers supported with the latest inspection equipment and tooling, assure standard bellows in rapid turnaround times.
  • We employ the latest weld systems with on-line touchscreens and controls to view and track the welding process in real time.
  • We conduct FEA (Finite Element Analysis) to predict the performance of metallic bellows in real-time operating conditions and optimize product design.
  • As part of our quality assurance program, we can provide complete certifications, as well as inspection and test reports according to customer requirements.
  • All our products undergo meticulous inspection and cleaning in a Class 100 cleanroom facility. The components undergo cosmetic inspection prior to wrapping and double bag packaging. Complete marking and bar coding services are also available.

Product Capabilities · Bellow Materials · Capabilities · More Information · Quality · Specifications

Product Capabilities

Bellows Inner Diameter

0.134” [3.40 mm] ~ 29.537” [750 mm]

Bellows Outer Diameter

0.371” [9.42 mm] ~ 37.402” [950 mm]

Bellows Length


Leak Rate

1 x 10-9 std. cc/ sec, Helium is standard


SST, High-Nickel and Titanium Alloys

Welding & Assembly

Class 1000 Clean Room or better


Class 100 Bench with 'Semi' Wrap

Bellow Materials  

Austenitic Stainless Steel


Precipitation Hardening Stainless Steels

AM-350, Annealed and Heat Treated

High Temperature, Nickel Base, Corrosion Resistant Alloys

Hastelloy B2
Hastelloy C22
Hastelloy C-276
Hastelloy X
Haynes 242, Annealed and Heat Treated
Inconel 625
Inconel 718, Annealed and Heat Treated
Inconel X750, Heat Treated
Monel 400
Monel K500, Annealed and Heat Treated

Titanium Alloys

Titanium Grades GR1-GR4 [Commercially Pure]

Zirconium Alloys

Zirconium 702


Production Environment

ALL Welding and Product Assembly performed in certified Class 1000 [or better] Clean Room
Final Clean & Package @ Class 100 Bench

Manufacturing Capabilities

  • Stainless Steel
  • Hi-Nickel Alloys
  • Titanium and Aluminum Alloys
  • CNC Turning – Multi Axis, CNC Milling
  • Mechanical & Hydraulic Presses
  • Stamping from 0.001" to 0.030" thick
    Welding - Fully & Semi-Automated Welding Lines
  • GTAW (Gas Tungsten Arc Welding)
  • Micro-Plasma
  • Laser
  • Orbital
    Heat Treating
  • Full Vacuum Heat Treat
  • Stress Relieving
  • Bake-out
    Specialized Component Parts Cleaning
  • Chemical Cleaning Lines - Alkaline & Acid
  • Electro-polishing Lines for Machined Parts and Diaphragms
  • DI Rinse & Dryers

Design Engineering

3D Solid Modeling
Assembly Engineering
Engineering Test Lab
Metallurgical Lab
Proprietary Software

More Information  


Beam Lines
Cassette Elevators
Chamber-Lift Bellows
Couplings, Flexible & Torque
Flexible Connectors/Expansion Joints
Gas Line Flexible Connectors
Gate Valves
Heater Assemblies
Hermetic Feedthroughs
Leak Detectors
Pin Lift Actuators
Pedestal Lifts
Reservoirs/Volume Compensators
Slit Valves
Spindle Assemblies
Valve Door Modules
Valve Stem Seals
Vibration Isolators
Wafer Handlers
Wafer Orienters
Wafer-Lift Bellows
X-Y-Z Manipulators

Industries Served

Semiconductor Original Equipment Manufacturers
Flat Panel & Display [TFT-LCD]
Solar & Alternative Energy
Vacuum Valves and Equipment
R&D Laboratories
Pharmaceutical Equipment
Electrical - Power Transmission


Quality Certifications

ISO 9001:2007 - Quality Management System
AS 9100 Rev.B. - Aerospace Bellows and Mechanical Seals
TS 16949:2002 - Automotive Bellows and Mechanical Seals
ASME NQA-1 - (KEPIC QAP2000) Nuclear Power Plant

Quality Systems and Features

ISO 9001 Quality System
Atomic Power Plant Q - Class Quality System
SSQA (Standardized Supplier Quality Assessment)
ISAT (Integrated Supplier assessment Tool)
QFOM (Quality Figure of Merit) Supplier
Poka-Yoke Tools
PQP (Frozen Process)
Zero Defect (Zero PPM)

Quality and Reliability Tests

Leak Detection - Mass Spectrometer [MST]
Leak Detection - Pressure [Bubble Test]
Life Cycle Standard Testing - Performed at Customer Operating Pressures
Life Cycle Diversified Testing - Performed at Temperature or with Special Offset, Angle, Twist or Rotation
Spring Rate
Mean Effective Area
Volume Displacement
SEM (Scanning Electron Microscope)
EDS (Energy Dispersive Spectroscopy)
Chemical Property Tester - PMI (Positive Material ID)


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