Flexider USA was recently acquired. If you have any questions or inquiries, please contact Dannenbaum LLC.

Flexider was part of the IMCI group. Also, they have been producing a wide variety of innovative products for the global market for over 90 years. Therefore, it was an industry leader.
Moreover, a strong focus of the group has always been on continual progression and enhancing this position. The recently established Flexider Industrial showed this. Flexider Industrial was a metal and fabric expansion joint manufacturer that services the needs of several industries, including Refining, Petrochemical, Power Generation & Chemical Processing Facilities.
Our employees had an average of over 20 years working with Expansion Joints and Bellows systems. Therefore, you could have relied on them to get the job done right the first time. The backbone of our company was our employees. Their solid fabrication experience, attention to detail, and ingenuity drive our growth and intensify customer commitment.

What We Do

Flexider Industrial is a fabric and metal expansion joint manufacturer that services the needs of several industries, including refining, petrochemical, power generation, and chemical processing facilities.
Our capabilities range from small 2” diameter expansion joints to 240 inches. Materials of manufacture include stainless steel, Nickel alloys, Aluminum, and Titanium. Our Engineering team uses the latest 3D modeling, design, and analysis software to create the perfect solution for all of your expansion joint needs.
When required, we utilize DFMEA (Design Failure Mode Analysis) & PFMEA (Process Failure Mode Effects Analysis) throughout all design stages, ensuring your product conforms to the highest possible standards.


Flexider USA is proud to offer quality flexible solutions for industrial applications. Each product line is designed to meet a wide range of temperature, movement, and chemical requirements to provide a reliable, long-lasting solution to your engineering needs.
Our products are designed to meet your project’s workload conditions and engineering requirements. The Flexider family of products shown below has an engineered solution to exceed expectations.

Flexider Fabric Expansion Joints

Flexider Industrial designs and manufactures fabric expansion joints utilizing state-of-the-art engineering and manufacturing. The metal frames come in a variety of styles. For example, integral telescoping liners, welded, and bolt-in frames can be designed to withstand continuous operating temperatures up to 2,000 degrees Fahrenheit. In addition, they are complete structures, combining specialized materials to provide technical solutions for numerous industrial applications.

Flexider Round Metal Expansion Joints

Round Expansion Joints are designed to absorb axial, lateral, and angular motion in any combination due to thermal or mechanical movements. And can be custom designed for varying purposes and workload conditions.
Furthermore, you can incorporate metal bellows into several design configurations, such as Pantographs, hinges, cross-over systems, two-ply testable bellow elements, pressure-balanced elbows, etc. you can add accessories such as tie rods, covers, insulation, and liners to the design to accommodate various requirements.

Flexider Rectangular Metal Expansion Joints

Flexider Rectangular Expansion Joints were functional in conditions. For example, that requires high temperature, long life, and low to medium pressure working conditions.
However, they were designed to mate easily with rectangular mechanical equipment and duct to eliminate the large square to round transitional sections. Corner conditions can be fabricated in a round, single miter, double miter, and folded corner designs.

Flexider Transfer Lines & Integrated Systems

Flexider USA can design and fabricate expansion joints that are shop-integrated into ducting and piping systems. This can eliminate dangerous, time-consuming, and costly field welds by allowing a section to be bolted or welded into the field at the engineered connection points instead of at the bellows. Mitered elbows, piping systems, round and rectangular ducting can all be fabricated and shipped to the site ready for installation.

Flexider USA

Flexider USA has been acquired. Please contact Dannenbaum LLC for more information. Flexider USA Industrial Manufacturing Company (IMC) and Industrial Manufacturing Company International (IMCI) were proud family companies.

They produced a wide variety of innovative products for industry. With more than 3,500 employees and 33 worldwide manufacturing. Sales and distribution facilities. It had aircraft and aerospace ducting systems, gears, lubrication systems, bleachers, steel and plastic lockers, storage systems, steel mezzanines, high-performance strainers, car and truck components, industrial hoses, and industrial expansion joints.

Although each IMC and IMCI company operates independently, common to all is a profound respect for the integrity of established industrial principles and practical openness to new technology applications.

Industrial Manufacturing Company Industrial Manufacturing Company International, with individual histories spanning decades-and in two cases more than a century-the IMC and IMCI companies, are time-tested leaders in their national and global markets.

Each IMC and IMCI subsidiary strives to tailor its products and services to the wishes of its customers, and each company s success has been built on the development of enduring customer relationships.

They take pride in providing not only products of consistently high quality. But also inflexible and responsive service and in realistically competitive prices.

IMC and IMCI will continue to expand their present holdings through investment in new manufacturing facilities and state-of-the-art machinery and equipment. Flexider USA Engineering and Fabrication of Metal Expansion Joints. Metal Expansion Joints help to absorb axially. As well as lateral and angular motion in any combination due to thermal or mechanical movements.

They are divided into different families. Each one can help its intended purpose and varying workload conditions:

  • Axial Expansion Joints
  • Lateral Expansion Joints
  • Angular Expansion Joints
  • Universal Expansion Joints
  • We can provide metal Expansion Joints with round or rectangular sections.
  • Furthermore, they help to meet the specific needs of the customer.

Fabrication of Metal Expansion Joints. The Metal Bellows element is produced beginning with a thin sheet of steel that is precision rolled and welded into a tube that is then mechanically or hydraulically formed into convolutions in quantity and shape to meet the engineering requirements.

Typically, flanges or weld bands are then added to the ends of the bellows element to aid in field installation due to the thinness of the material.

Tie rods, hinges, covers, and you can then add liners to the assembly to accommodate the design specifications—finite Element Analysis of Tie Rods.

Metal Expansion Joint Engineering. Flexider designs and engineers all Metal Expansion Joints to the current edition of the Expansion Joint Manufacturer s Association Standards.

(EJMA) When required, expansion joints are also designed to ASME Section VIII Division 1, Appendix 26, B31.3 Appendix X, and ASME B31.1. Engineering design for all metal expansion joints starts at the inquiry stage, and a Bellows Design Analysis (BDA) is prepared for each expansion joint required.

Testing Expansion Joint with Retaining Rings Design drawings for every order released for manufacturing is modeled entirely within Solid Works to guarantee accurate fabrication details. Hinged Metal Expansion Joint Pantograph Expansion Joint

Flexider USA Fabrication and Design of Fabric and Rubber Bellows

Flexider USA designs and manufactures rubber and fabric expansion joints utilizing state-of-the-art PTFE and Elastomeric fiberglass reinforced materials.

The metal frames come in various styles, including integral telescoping liners, welded, and bolt-in frames. Flexider USA Fabric and Rubber joints are used in multiple applications, including Desalinization Plants, Power Plants Pumping Stations, FGD Marine Offshore Fabric Expansion Joints.

Joints can be designed to withstand continuous operating temperatures up to 2000 degrees Fahrenheit through insulating materials and additional duct wall stand-off.

They are complete structures, combining various materials and utilizing their combined thermal, chemical, mechanical resistance, and fatigue properties to provide technical solutions for specific applications.

They are commonly used for: Absorbing Thermal Expansion Allowing EagleBurgmann We can provide axial, Lateral, and Angular Motion Fabric Expansion Joints in different shapes (round, rectangular, etc.) according to varying needs and requirements of the customer.

Fabric Expansion Joint, Fabric Belt Material, Rubber Bellows, Fabric Expansion Joint, Rubber Expansion Joints. Flexider USA Rubber Bellows are flexible connections made from elastomers and can be designed to accommodate the many types of movement encountered on different types of process equipment:

  • Noise Reduction Vibration
  • Isolation Stress Neutralization; axial, lateral, angular, and torsional Misalignment Compensation at plant start-ups and new equipment installations.
  • Rubber Expansion Joints help transport fluids under a wide range of temperatures and pressures (positive or vacuum).

Stainless Metal Bellows

Shipping a Large Metal Expansion Joint

Experienced Designers & Fabricators

The entire staff at Flexider USA is highly experienced in the specification, design, engineering, and fabrication of Expansion Joints. Every Flexider USA Engineer has a minimum of 35 years in the industry.

Designers and Shop Foremen each have a minimum of 20 years of experience. Quality Expansion Joints are our passion and an integral part of our everyday life. Here are just a few of the industries we service:

Catalytic Platformers & Reformers MTBE Desalinization Plants Power Plants FCC Steel Mills Oil & Gas Production Petrochemical Tied Universal Stainless Expansion Joints.

Flexider Industrial

Flexider industrial was recently acquired. Please contact Dannenbaum LLC for more information or an RFQ. In this paragraph, I’m going to tell you about Flexider Industrial.

Flexider Industrial is a worldwide supplier of expansion joints for Fluid Catalytic Cracking Unit (FCCU) applications. Also, these expansion joints must withstand some of the most challenging conditions of any industry.

However, few joint expansion manufacturers have the resources to design and manufacture products to meet these demands. Moreover, Flexider Industrial has a long-established record of manufacturing dating back to its founding in Turin, Italy, in 1921.

Flexider Industrial has since expanded to other countries, including a significant manufacturing facility in Oak Ridge, Tennessee. Industrial Manufacturing Company International is the parent company of Flexider.

IMCI companies produce a wide variety of products for industry. For example, the Flexider Industrial group provides expansion joints and other related items to the aerospace, automotive, and industrial markets.

Design and Engineering

Firstly, Flexider Industrial specializes in custom design and engineering FCCU expansion joints. Moreover, these items require a high degree of technical expertise.

Our employees have an average of over 20 years of experience in the joint expansion industry. American BOA and metal expansion joints are designed by expansion joint manufacturers association (EJMA) standards.

Customer Service

Firstly, Flexider Industrial has a clear and overriding objective: our customers should be satisfied with our products, services, prices, and employees.

Thus commitment to our customers is further realized by maintaining a practical but comprehensive Quality Management System and implementing its continuous improvement.”

Flexider Overview

The FCC process is one of the most crucial conversion processes in a petroleum refinery. Furthermore, the process converts high molecular weight hydrocarbon fractions of petroleum crude to more valuable products such as gasoline and olefinic gases.

Flexider Cold Wall Expansion Joints

  • Flexider Industrial Cold wall expansion joints utilize a high-density internal refractory lining to reduce the design temperature of the shell/piping below the temperature of the internal media. Although the catalyst or flue gas temperature may be as high as 1,400 °F, the inner refractory lining reduces the shell temperature below 650 °F. As a result, carbon steel is usually specified for the piping material of a cold wall expansion joint.
  • Design Features of a Cold Wall Expansion Joint Flexider
  • External Insulation: The external insulation elevates the bellows operating temperature above the internal dew point condensation temperature to minimize corrosion on the inner ply of the bellows.
  • Refractory: High-density refractory insulates the piping inside to reduce heat transfer to the expansion joint shell.
  • Refractory Anchors: T304H stainless steel anchors anchor the high-density refractory lining to the carbon steel shell.
  • Liner Gaps: Both the longitudinal and radial gaps at the open downstream end of the liner are sized for the design movements of the expansion joint. These gaps are minimized as much as possible to reduce the amount of catalyst that can enter the liner cavity.
  • Liner Seal: The liner seal minimizes the amount of catalyst entering the cavity between the internal flow liner and the bellows. The liner seal also protects the structural integrity of the inner insulation.
  • Internal Insulation: The internal insulation reduces the bellows operating temperature below the creep temperature and prevents catalysts from packing in the cavity between the inner flow liner and the bellows.
  • Hex Mesh: The inside of the internal flow liner contains a hex mesh lining.

Flexider Industrial Hot Wall Expansion Joints

Hot wall expansion joints are commonly found in the flue gas piping throughout an FCC unit. Hot wall expansion joints on the inlet and outlet piping of an expander are unlined to eliminate loose pieces of the abrasion-resistant lining from traveling through the expander.

Flexider Industrial Design Features of a Hot Wall Expansion Joint

  • The shear spool transfers the pressure thrust load and any external design loads from the external hardware to the line pipe.
  • The internal insulation reduces the bellows operating temperature below the creep temperature of the bellows material.
  • The external insulation elevates the bellows operating temperature above the internal dew point condensation temperature to minimize corrosion on the inner ply of the bellows.
  • The internal telescoping flow liners are a complete bore design that reduces the flue gas pressure drop flowing through the expansion joint. In addition, the inner telescoping flow liners create a cavity for the internal insulation, which is critical in reducing the bellows operating temperature.
  • The smooth transition of the expanded line pipe minimizes the thermal stresses caused by the differential radial thermal growth between the line pipe operating at the whole temperature of the media and the insulated bellows element used at a reduced temperature.
  • Pins welded to the outside of the shear spool slide thru corresponding holes in plates welded to the floating rings.
  • Due to insulation installed between the line pipe and the inside of the floating ring. The floating ring operates at a much lower temperature than the line pipe. In many cases, the floating ring may be carbon steel, even though the flue gas temperature is maybe 1,450 deg. F.

Flexider Gimbal

The gimbal hardware allows the expansion joint to absorb angular movement in all planes.

Flexider Hinge

The hinge hardware allows the expansion joint to absorb angular movement in one plane. Moreover, hardware is designed to restrain pressure thrust and other external loads.

Flexider Industrial Pantograph

Pantograph linkages equalize the axial movement each bellows of a universal assembly. The center gimbal ring allows the expansion joint to offset in the opposite plane to the pantograph without the linkage binding.

Tie Rods

The expansion joint can absorb large lateral movements while the tie rods absorb the pressure thrust load.

Flexider Bellows Design

The expansion joint bellows reliability is critical for FCC units as they generally stay online for long periods between shutdowns. For this reason, bellows design incorporates a redundant pressure-retaining ply combined with leak detection hardware.

Flexider Two-Ply Testable Bellows

The inner ply retains the pressure under normal circumstances. However, if the inner ply develops a leak, the outer ply then keeps the tension. This alerts personnel to take precautions to repair or replace failing bellows as soon as possible.

Flexider Industrial Oversize Clamshell Bellows

If a bellows leak through both bellows plies, it may be possible to install oversize clamshell bellows over the existing bellows while the unit is online. The bellows have a weld end that allows attachment to existing endplates.

Flexider Company Profile

See below Flexider Company Profile. Flexider USA was acquired Please get in touch with Dannenbaum LLC for more information.

Production of flexible hoses for the Automotive and Aeronautical markets begins. In addition, 1947 joint expansion production for petrochemical plants is added.

1991 Anamet Inc., a USA corporation, buys Flexider stock. 2002 Industrial Manufacturing Company International (IMCI) assumes control of Flexider. 2003 IMCI reorganizes Flexider creating Automotive, Aerospace, and Industrial business units providing improved focus.

2011 Celebrating 90 years: quality solutions for the 21st century. 1964 New production facility was inaugurated in Turin, Italy. In addition, new sales offices are added to improve service and expand the business.

1968 Rodolfo De Benedetti turns Company leadership over to his son, Carlo De Benedetti. 1972. changes its name in Flexider.

1972 Carlo De Benedetti acquires the Gilardini Company, creating a new and powerful industrial group.

Flexider becomes part of the Gilardini Group with the vision of becoming an industry leader within its sector. 1975 Production of FCC expansion joints begins. 1976 Carlo De Benedetti sells Gilardini stock to the Fiat Group.

Flexider Industrial

Flexider Expansion Joints

Flexider company profile research & Development Applications3-Dimensional Design All pipe connections are subjected to stress. That is why proper design must consider movement, pressure, temperature, service life, materials, and corrosion.

At Flexider, all products are designed utilizing 3-D CAD technology to meet the Expansion Joint Manufacturer Association (EJMA) and the American Society of Mechanical Engineers (ASME).

Finite Element Method Analysis Finite Element Method Analysis (FEM) principles enable the visualization of details of each component at critical points in both the product and proposed installation.

This ensures that varying environmental conditions such as thermal and fluid expansion and structural integrity are considered before manufacturing.

Flexibility and Quality for the Global Market. Flexider’s product is utilized in a wide range of process applications:

  • Catalytic Platformers
  • Reformers
  • Desalinization Plants
  • FCC
  • LNG
  • LNG Carriers
  • MTBE
  • CAR
  • Petrochemical
  • Polypropylene/ Ethylene
  • Power Plants
  • Nuclear Plants
  • Steel Mills
  • Styrene
  • Others
  • pipe bellows

Flexider company profile product Range Rubber Expansion Joints and pipe seals. Rubber expansion joints are flexible connectors made from elastomers, designed to accommodate the different types of movements encountered on different types of process equipment:

  • Noise reduction
  • Vibrations isolation
  • Stress neutralization: axial, lateral, angular, and torsional
  • Misalignment compensation at plant start-ups Rubber expansion joints transport fluids under a wide range of pressures (positive or vacuum) and temperatures.
  • Metal Expansion Joints

Metal expansion joints are designed to absorb axial, lateral, and angular movements in any combination. They are divided into different families for different working conditions:

  • Axial expansion joints
  • Angular expansion joints
  • Lateral expansion joints
  • Universal expansion joints

Metal expansion joints can be provided with round or rectangular sections. Fabric Expansion Joints Fabric expansion joints combine different materials and utilize their combined thermal, chemical, mechanical resistance, and fatigue properties to provide technical solutions for specific applications.

They are commonly used for: Absorbing thermal expansion, allowing axial, lateral, and angular motion fabric expansion joints can be provided in different shapes (round, rectangular or other). Flexider Industrial.

Spring Hangers

Spring hangers are available in two different types, accommodating various field applications and requirements: Constant load and Variable load. Constant load hangers compensate for the vertical displacements of pipes caused by thermal variations or other stresses. Variable load hangers are utilized to support the weight of the line.

Flexible Hoses Flexible hoses are designed for use in static or dynamic connections and provide the following properties: Excellent flexibility, Pressure resistance, Corrosion resistance, Good vibration damping. Hoses are available in various configurations to meet various requirements, applications, and operating conditions.

Transfer Lines Transfer lines are utilized to move fluids over a wide range of operating temperatures. The piping used in transfer lines is typically made from different types of steel, dependent upon applications: Carbon steel, Stainless steel.

They can be insulated with a refractory layer or refractory blankets to maintain and preserve high operating temperatures, flexibility, and quality.

On-Site Service Flex-Shell Technology.

At Flexider, we understand how crucial operational reliability is. We assure you that our designs and products provide years of reliable service. Thus minimizing unanticipated situations which result in shutdowns and additional expenses.

As experts in our field, we have developed the technology to provide our customers with the industry’s best on-site service over the years.

Installations are correctly done to reduce maintenance and savings in labor costs, ensuring a properly functioning and reliable product.

It is necessary to repair or replace leaking bellows, but it is impossible to shut down or remove an existing unit. Flexider USA has the solution. The “Flex-Shell Technology” enables to repair of the leaking bellows directly without shutting down and with a quick turnaround time.

This permits production to continue while you will replace damaged bellows over a series of scheduled plant shutdowns. In addition, Flexider’s supervisors are trained to provide the best operational results while maintaining strict on-site safety.

Flexider Industrial.

The information mentioned here indicates not binding Flexibility and Quality for the Global Market INDUSTRIAL An IMCI Company Flexider S.r.l.

Headquarters Corso Romania 501/2410156 Torino – Italy Tel. +39 011 2627111Fax +39 011 2627404

Flexider Industrial China Nanjing Bijur Machinery Products, Ltd.#9 Hengtong Road Nanjing Xingang Economic & Technical Development Zone Nanjing 210038 North America Bijur Delimon International 2100

Gateway Centre Blvd. Suite 109 Morrisville NC 27560

Flexider Russia OOO Bijur Delimon Vozdvizhenka ul. 10125009 Moscow Flexider S. Africa (pty) Ltd.12 Libertas Road Struandale, Port Elizabeth South Africa 6005 Certifications.

Our results have been achieved through the company’s engagement in quality assurance and technological capability.

A continuous improvement effort implements the quality assurance system, procedures, and practices needed to meet the highest standards.

Flexider S.r.l. Headquarters Corso Romania 501/2410156 Torino Italy