![Ejma bellows software systems reviews Ejma bellows software systems reviews](/uploads/1/2/5/7/125799558/862157748.jpg)
Finite Element Analysis and Pipe Stress Analysis software are used to simulate the. As a member of EJMA, U.S. Bellows, Inc. Follows strict quality control procedures to. These expansion joints will require anchoring of the piping system.
![Ejma Bellows Software Systems Ejma Bellows Software Systems](/uploads/1/2/5/7/125799558/973470567.jpg)
Metallic Expansion Joints - Thin-Wall - Rectangular - Thick Wall - Slip-Type - Fabric Refractory Lined - Rubber Expansion Joints |
U.S. Bellows, Inc. is comprised of the manufacturing resources of RM Engineered Products of Ladson, SC (acquired in 1995) and Ketema - U.S. Bellows, Inc. of San Diego, CA (acquired in 1997). Since the 1960s, U.S. Bellows has been designing and manufacturing engineered Expansion Joints for various industries and applications, including the following:
FACILITY U.S. Bellows has the capability to fulfill any expansion joint requirement. Our location gives us the advantage for fast and convenient shipping around the world.
MANUFACTURING Over 30 years of engineering and manufacturing experience guarantees that our products will have the performance reliability customers desire. U.S. Bellows, Inc. manufactures bellows in a variety of methods including the following:
ENGINEERING U.S. Bellows, Inc. has over 45 experienced engineers on-site to provide you with cost-effective, high quality solutions. Utilizing the latest design software and analysis applications, as well as in-house developed software, U.S. Bellows can design and manufacture specialized custom units as per your specifications. Finite Element Analysis and Pipe Stress Analysis software are used to simulate the loads and resulting stresses that may occur in a design system. These computer programs help determine engineering design specifications to meet load/stress requirements.
QUALITY As a member of EJMA, U.S. Bellows, Inc. follows strict quality control procedures to ensure that its products meet industry standards. U.S. Bellows, Inc. is in compliance with the following codes and standards as applicable: ASME Section VIII, ANSI B31.1, ANSI B31.3, API 620, AISI, EJMA, and ICBO Each Bellows and Expansion Joint is inspected thoroughly, both during the fabrication process and prior to shipping, to ensure the products are delivered to our customers in optimum condition. U.S. Bellows, Inc. offers the following Performance Assurance Programs:
PRODUCTS U.S. Bellows, Inc. has extensive experience in designing and manufacturing all types of Metallic and Fabric Expansion Joints. In addition, U.S. Bellows can repair/fabricate replacement and equivalent Expansion Joints manufactured by other suppliers. Thin Wall Metallic - Single Expansion Joint- Toroidal Expansion Joint A Single Expansion Joint is a bellows element with end connections that allows movement in any direction or plane. However, the piping must be guided in the same direction of the movement. Single Expansion Joints are the least expensive type available.
Thin-Wall Metallic - Universal Expansion Joint The universal expansion joint consists of two bellows separated by a pipe section or spool. This arrangement allows the unit to accept large amounts of lateral deflection. The amount of lateral deflection capability can be adjusted by changing the length of the center spool.
Thin-Wall Metallic - Hinged Expansion Joint Hinged Expansion Joints contain hinges or pivots which allow the unit to bend in a single plane. These units are designed to restrict axial deflection, either in extension or compression. The hinge mechanism is typically designed to accept full pressure thrust.
Thin-Wall Metallic - Externally Pressurized Expansion Joint Externally Pressurized Expansion Joints contain a bellows and an outer-shell. In this design, the pressure is applied externally to the bellows. These expansion joints will require anchoring of the piping system.
Thin-Wall Metallic - Clamshell Bellows
Thin-Wall Metallic - Gimbal Expansion Joint
Thin-Wall Metallic - In-Line Pressure Balanced Expansion Joints In-line Pressure Balanced Expansion Joints consist of three bellows - two In-line bellows on each side and one balancing bellows in the middle. They are typically used when axial & lateral deflections exist and anchoring is impractical for structural or economical reasons. An In-line Pressure Balanced Expansion Joint is a solution to difficult design problems.
Thin-Wall Metallic - Elbow Pressure Balanced Expansion Joint The mechanism of the Elbow Pressure Balanced Expansion Joint is similar to that of the In-line pressure balanced expansion joint, except these joints are used in piping systems where there is a change of direction. They are generally used to handle a large amount of lateral movement and a moderate amount of axial movement. The pressure thrust is contained within the tie rods of these expansion joints.
Thin-Wall Metallic - Refractory Lined Expansion Joint
Thick Wall Metallic Expansion Joint Thick Wall Expansion Joints are used primarily in heat exchangers and large diameter piping systems where Thin Wall Expansion Joints cannot be used. The bellows are typically fabricated from A516 Grade 70 material, with the thickness ranging from 3/16' to 1'. Other materials are available to meet different temperature requirements.
Rectangular Expansion Joint Rectangular metal expansion joints are used for a variety of applications in power, petrochemical, refining, chemical, and steel industries. Due to the wide range of pressure, temperature, and duct size requirements, each rectangular metal expansion joint is custom-engineered to provide an economical design that will not sacrifice the integrity of the entire system.
Slip-Type Expansion Joint Slip Type Expansion Joints are used to accommodate large axial movement. They are available in various materials for different temperature and pressure requirements. Design details must include selection of packing and sealing materials, as well as the media that flows through the expansion joint. All applications require machine surfaces to minimize abrasive wear. Others may require 'wiper' mechanisms to prevent potential clogging in between the two slipping pipes.
Fabric Expansion Joint Fabric Expansion Joints are often used in ducts which carry hot gases at low pressure. The major design parameters are temperature, pressure and flow rates of the media going through the duct. Layers of different fabrics, insulation, and metal foils can be combined to accommodate different temperatures and pressures in the system. The fabric belt may require periodic replacement.
Rubber Expansion Joint
Stock Bellows U.S. Bellows has created a system of stock bellows for your quick-turn/emergency requirements. We have over 300 stock bellows on the shelf, ranging in size from 1' to 24' in diameter. Using our stock bellows, U.S. Bellows can quickly assemble and ship a variety of expansion joints. Services On-Site Field Services U.S. Bellows, Inc. has extensive experience providing on-site services for Expansion Joints which include the following:
We provide you with the most comprehensive program available. U.S. Bellows is available on a 24x7 basis to fulfill any emergency/quick-turn requirement that might arise. With a system of stock bellows, U.S. Bellows can quickly assemble and ship products for any quick-turn/emergency situation.
|
Two-ply bellows are made up of two concentric tubes made of sheets of metal of a defined thickness. Two-ply bellows are the most common type of bellows, providing a good balance of bellows life, spring rate and a wider operating range.
We ensure that the bellows be designed in such a way that each ply is capable of handling full line pressure. In the event of failure of the inner ply, the outer ply will last long enough to replace the bellows and reduce any potential down time. BSI can provide two ply testable variants as well.
For example, let us consider 2 bellows of the same size (1.5” in this case), one made up of a single ply of 0.008” thick Stainless Steel and another made up of 2 plys of 0.008” sheets. From the below graph, we see that the pressure handling capacity increases by 2.2 times. The spring rate is also roughly 2.3 times higher for the two-ply material.
Another use for designing a two-ply bellows is to reduce the spring rate at a given overall thickness. However, this does come at the cost of lower pressure handling capacity at any given temperature as shown in the example below.
If you are unsure of what kind of bellows design is right for you contact our engineers today and we will provide you with the right bellows for your application. All the Two-Ply metal bellows manufactured in BSI are in accordance with the Expansion Joint Manufacturers Association (EJMA) guidelines latest edition.
We at Bellows systems do rigorous testing on bellows as part of manufacturing including low pressure air testing, high pressure hydro tests, florescent penetrant tests, radiographic tests and helium leak tests. Bellows systems has AWS B2.1 certified TIG Welders for custom bellows and AWS D17.1 certified GTAW weld operators for all aerospace bellows.