Flange adaptor

MS flange adapters export to Singapore

Exporting MS (Mild Steel) flange adapters to Singapore requires careful consideration of several aspects to ensure a smooth and compliant process.

MS flange adapter

MS flange adapter with bolts

MS flange adapter with bolts

Measurement out diameter

waterline table

Measurement height

What are Expansion Joints

Expansion joints are devices containing a bellows membrane that are designed to absorb dimensional changes, such as those that occur due to thermal expansion or contraction of a pipeline, duct or vessel.

Expansion joints are devices containing a bellows membrane that are designed to absorb dimensional changes, such as those that occur due to thermal expansion or contraction of a pipeline, duct or vessel. The need to solve the problems of thermal expansion are not unique to anyone industry therefore expansion joints are used in a wide variety of market sectors specifically where there is a need to control the movement of pipelines due to changes in temperature. Thermal expansion problems can be solved where the natural flexing of the pipe is practical or where it is possible to install pipe loops however this is not always possible due to economic reasons or the design of modern structures are not capable of taking the loads of flexing pipework. In these situations the design engineer must seek an expansion joint solution.

Expansion joints come in two forms either restrained or unrestrained styles and although the bellows membrane incorporated in both styles look similar it is of great importance to recognize that they are used for entirely different applications.

Unrestrained expansion joints accommodate pipe movement by compressing and /or extending along their axis and hence they are also known as axial expansion joints. Axial expansion joints are very compact, adaptable and relatively inexpensive. Generally axial expansion joints are designed to accommodate movements between 25mm and 75mm however special bespoke expansion joints can be manufactured to suit specific site conditions. They must be suitably anchored and guided so as to prevent damage from the forces imposed on the pipework system. An installation with unrestrained expansion joints is called a non-pressure balanced solution

Restrained expansion joints are fitted with tie bars and / or hinges and therefore preventing the joint from moving axially. There are several expansion joint models that fall into the restrained group of expansion joints and are called Lateral, Fully Articulated, Hinged or Gimbal. The benefits of installing these types of expansion joints are that anchor forces are generally lower than installing unrestrained bellows and therefore savings can be made when selecting suitable anchors and guides. Restrained expansion joints are used in more complex pipe arrangements specifically on equipment where forces have to be kept to a minimum and, there is a requirement to take up large movements. Although retrained expansion joints are more expensive than unrestrained units significant cost savings on the total installation can be made due to reduced anchor and guide costs. An installation with restrained expansion joints is called a pressure balanced solution

The difference between metallic and rubber expansion joints

Metallic expansion joints prevent damage from thermal expansion, vibration and other movements such as building settlement. Metallic expansion joints are generally manufactured from stainless steels or for more demanding environments or extreme conditions can be produced in materials such as Inconel, Incoloy, Hasteloy and Monel.

Expansion joints can also be produced from a variety of synthetic rubber materials such as ethylene propylene diene monomer (EPDM), Nitrile, Hypalon and Viton materials. Rubber expansion joints are primarily used on pumps, chillers and other reciprocating machinery to reduce noise and vibration. Whilst rubber bellows have the capabilities of compensating small amounts of axial, lateral and angular pipe work movement Sunny Steel always recommend a specifically designed metallic expansion joint to accommodate pipe movements when solving thermal expansion problems.

Are expansion joints the same as movement joints?

Expansion joints - sometimes called expansion bellows, flexible joints, compensators or movement joints. The variety of terminology for the same piece of equipment can be misleading. However expansion joints are designed to safely absorb dimensional movement changes and therefore the different names given to this critical unit are all related to its ability to accommodate a variety of movements such as expansion & contraction due to temperature difference, vibration due to reciprocating machinery, installation misalignment or building settlement.

Complying with the highest standards

At Sunny Steel, we offer a vast selection of expansion joints to serve a variety of purposes and are always on hand to provide you with accurate, high-quality advice whenever you require it. Our range of expansion joints includes axial, lateral, angular and gimbal joints. Our expansion joints are designed and calculated to the latest prevailing standards and pressure directives and therefore where applicable conform to latest Expansion Joint Manufacturers Association (EJMA) calculations. We reserve the right to make changes in the technical calculations without notice. All products are supplied with detailed installation and maintenance instructions where applicable to ensure your pipework system is fully in accordance with recommended engineering practice.

Find the right expansion joints for your needs

We oversee a large amount of stock, which ensures we can minimise downtime and respond to your requests quickly. We can supply joints with a bespoke flexible lagging jacket if needed. Why not contact us today if you do have any queries about the products that we supply? More and more discerning clients are heading straight to Sunny Steel when they do require expansion joints of the highest quality. We are renowned for only supplying products of the highest quality that do the job to the best standard possible and are more than happy to talk you through the options available so you can easily come to an informed decision and invest in the products that are right for you.

What are pipeline compensators?

pipeline compensators are joints between sections of pipe that move, expand and contract to compensate for pressure caused by thermal changes, vibration from machinery and misalignment. Expansion joints are often referred to as compensators, expansion bellows or flexible joints and can be used in a variety of applications, including transfer sections near boilers, engines, turbines, condensers, pumps or heat exchangers.

Expansion joints can be made from a variety of materials depending on the application. Metal bellows are one of the most common and useful types of expansion joint, but rubber, fabric and plastics (such as PTFE) are also used in various circumstances. To ensure that the correct type of expansion joint is used for your application, it is essential that an engineer with experience in this field is consulted prior to implementation.

Expansion Joint for Piping

An expansion joint for piping is a flexible component used in piping systems to accommodate thermal expansion, contraction, vibration, and movement. It is designed to absorb the stress and movement caused by temperature changes, preventing damage to the piping system.

When selecting an expansion joint, factors like temperature range, pressure rating, material compatibility, and movement capacity should be carefully assessed. Safety is of paramount importance, and expansion joints should be inspected regularly to ensure they are in proper working condition.

Reliable

Compensator reliability is by the design, manufacture, installation and operation and management and other aspects of the composition. Reliability should also be considered from these aspects.

Material Selection For the selection of corrugated pipe for heating pipe network, in addition to considering the working medium, working temperature and the external environment, the possibility of stress corrosion should also be considered, the impact of water treatment agent and pipe cleaning agent on the material, etc.,

Based on this, the corrugated pipe material is welded and formed, and the cost performance of the material is optimized. The economical and practical corrugated pipe material is selected.

Under normal circumstances, the use of corrugated pipe material should meet the following conditions:

1. high elastic limit, tensile strength and fatigue strength, to ensure the normal work bellows.
2. good plasticity, easy corrugated pipe processing and shaping, and can be followed by the treatment process (cold hardening, heat treatment, etc.) to get enough hardness and strength.
3. better corrosion resistance, to meet the bellows in different environments work requirements.
4. good welding performance, to meet the bellows in the production process of the welding process requirements.

For the laying of the heat pipe network, when the compensator is located in the lower pipelines, rain or accidental sewage will soak corrugated pipe, should consider the use of more corrosion-resistant materials, such as iron-nickel alloy, high-nickel alloy. Due to the high price of such materials, it may be advisable to add a corrosion-resistant alloy only to the surface in contact with the corrosive medium when making the bellows.

What different varieties of expansion joints are there?

In a piping system a Expansion joints alternately known as Bellows are like sealed springs. Sealed because it is required to contain the fluid pressure which is flowing through it and spring because it is required to respond to the movement of the connected piping without offering appreciable stiffness to the piping system.

An expansion joint/bellow element employed in a piping system is an assembly of generally more than one convolute in series. The convolutes are designed strong enough to withstand the internal pressure of the system, at the same time the typical contour of the convolute assembly allow sit to flex under thermal movement of the connected piping. As a result of this extreme flexibility the expansion joint / bellow as such is highly incapable of absorbing any longitudinal loads by its own,thereby requiring external attachments to transfer these longitudinal loads to its connected piping for maintaining the overall stability of the piping system under question.

Common types of expansion joints

• Simple Expansion Joint
• Universal Expansion Joint
• Pressure Balanced Expansion Joint
• Hinged Expansion Joint
• Gimbal Expansion Joint

However should site conditions demand a unique solution then end connections can be adapted to most applications.

What is the difference between a bellows and an expansion joint?

The terms can be confusing since there is no universally accepted meaning. We usually use the following definitions, but the terms “bellows” and “expansion joint” are generally considered interchangeable:

• Expansion joint: An expansion joint is a complete unit with metal, rubber or fabric bellows and end connections and accessories, as well as optionally, internal linings, outer covers, etc … Other terms used: compensator, flexible.
• Metal bellows: it is the flexible element of metal expansion joint.
• Rubber bellows: it is the flexible element of rubber expansion joint.
• Internal lining: the internal lining goes inside the expansion compensator, underneath the metal bellows or the rubber bellows to prevent the circulating fluid from falling directly on the bellows. This reduces flow disturbance and allows the bellows temperature to be controlled in the design.

Type of Pipe expansion joints

Pipe expansion joints are also known as compensators, as they ‘compensate’ for the thermal movement.

Pipe expansion joints are necessary in systems that convey high temperature commodities such as steam or exhaust gases, or to absorb movement and vibration. A typical type of expansion joint for pipe systems is a bellows which can be manufactured from metal (most commonly stainless steel), plastic (such as PTFE), or an elastomer such as rubber.

A bellows is made up of a series of one or more convolutions, with the shape of the convolution designed to withstand the internal pressures of the pipe, but flexible enough to accept the axial, lateral, and/or angular deflections. Expansion joints are also designed for other criteria, such as noise absorption, anti-vibration, earthquake movement, and building settlement.

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

Q: How can you guarantee the quality or any warranty?
A: Check the specification, material and appearance before delivery, and approve the delivery after qualified.

B: Support third-party inspection.

Q: What can we do for you?
A: we support OEM/ODM,we can provide drawings,technical support,installation maintenance.

Q: Can you provide samples?
A: Yes, we generally provide samples with a diameter of 100 or less, and you need to bear the freight of the samples

Q:What information do I need to provide if I want an accurate quote.
A: Please confirm the product, material, working pressure, connection method, flange standard, medium and quantity.

Q: Do you accept small quantity order?
A: Of course we do.

Q:what are your payment term?
A: After receiving T/T 30% payment, start production; Remaining 70% paid before delivery

Q: Where is your nearest loading port?
A: Shanghai, Qingdao or Tianjin, China.

Q: When is your shipping and delivery time?
A: By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.

Where are expansion joints in use?

An expansion joint is a useful component in an infinite number of applications. Metal expansion joint assemblies are commonly used for all kinds of industries and applications including:

• Power Generation
• Co-Generation, Petrochemical
• Chemical Processing
• Pulp Paper Manufacturing
• Cryogenic Process
• Pressure Vessel and heat Exchanger
• Heat Steam recovery Generator
• Architect Engineering
• Construction Engineering
• Mechanical contractor
• Pharmaceutical manufacturing
• Gas Turbine, Gas Transmission
• Diesel Engine Mfg, Incineration
• Waste Water Treatment

Expansion joints are often installed near boilers, heat exchangers, pumps, turbines, condensers, engines and in long pipe systems or pipe ducts.

Expansion joints come in a wide variety of designs. Some of them are standard and some are customised as per client requirements.

Although their design may vary significantly, all expansion joints are nevertheless composed from some of the following components, all with one or more specific functionalities: bellows, welding ends, flanges, hinges, tie-rods, spherical washers, wire mesh, insulation, inner sleeve, external cover, elbow and/or ring reinforcement/equalizing rings.

In general, there are fabric, metallic, and rubber expansion joints.

• Metallic Expansion Joints
  • Single Expansion Joints
  • Hinged Expansion Joints
  • Gimbal Expansion Joints
  • Universal Expansion Joints
  • Elbow Pressure Balanced Expansion Joints
  • In-line Pressure Balanced Expansion Joints
  • Externally Pressurized Expansion Joints
  • Toroidal Expansion Joints
  • Thick Wall Expansion Joints
  • Slip-type Expansion Joints
  • Rectangular Metallic Expansion Joints
  • Refractory Lined Expansion Joints
• Fabric Expansion Joints
• Rubber (Neoprene) Expansion Joints

In a piping system a Expansion joints alternately known as Bellows are like sealed springs. Sealed because it is required to contain the fluid pressure which is flowing through it and spring because it is required to respond to the movement of the connected piping without offering appreciable stiffness to the piping system.

Application of expansion bellows

The Bellows are generally employed in a piping system in one of the following situations:

• When the space constraints do not permit providing adequate flexibility by conventionalmethods (e. g. expansion loops etc.) for maintaining the system stresses withinacceptable limits.
• When conventional solutions (e.g. expansion loops etc.) create unacceptable processconditions (e.g. excessive pressure drop).
  When it is not practical to limit the piping induced loads on the terminal nozzles of theconnected equipment within admissible limits by conventional methods.
• When the equipment such as Compressors, Turbines, Pumps etc. necessitate isolatingthe mechanical vibrations from being transmitted to the connected piping.

How do they work?

An expansion joint or movement joint is an assembly designed to safely absorb the heat-induced expansion and contraction of construction materials, to absorb vibration, to hold parts together, or to allow movement due to ground settlement or earthquakes.

They are commonly found between sections of buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures.

Expansion joints – sometimes called expansion bellows, flexible joints or Expansion joint – are devices that comprise of a flexible element known as the bellows membrane that is fitted to end connections that are best suited to the pipework they are to be installed in.

Most bellows membranes are manufactured from stainless steel and are made up of a series of convolutions manufactured to withstand the pressure of the system but also must be suitable to accept the movements for which they are designed. The bellows membrane comprises of a series of convolutions designed to withstand the internal pressures of the system, but at the same time flexible enough to accept axial, lateral and angular deflections.

The joint needs to be a highly resistant nature so it’s necessary to make sure that it’s far thicker than you’d expect. In turn, this slows down any effects of potential corrosion as although it may be affected by the elements over time, it will still retain its density.

Ducted Air Systems

Expansion joints are required in large ducted air systems to allow fixed pieces of piping to be largely free of stress as thermal expansion occurs.

Bends in elbows also can accommodate this.

Expansion joints also isolate pieces of equipment such as fans from the rigid ductwork thereby reducing vibration to the ductwork as well as allowing the fan to “grow” as it comes up to the operating air system temperature without putting stress on the fan or the fixed portions of ductwork.

An expansion joint is designed to allow deflection in the axial(compression) or laterally (shear) or angular (bending) deflections. Expansion joints can be non-metallic or metallic (often called bellows type). Non-metallic can be a single ply of rubberized material or a composite made of multiple layers of heat and erosion resistant flexible material.

Typical layers are: outer cover to act a gas seal, a corrosion resistant material such as Teflon, a layer of fiberglass to act as an insulator and to add durability, several layers of insulation to ensure that the heat transfer from the flue gas is reduced to the required temperature and an inside layer.

A bellows is made up of a series of one or more convolutions of metal to allow the axial, lateral or angular deflection required.

Application of big size metal expansion joint

Installing product: Metal expansion joint with carbon steel flange

Size: DN1600 DN1200

Tied Universal Expansion Joint Applications

Tied universal expansion joints are frequently used to absorb lateral deflection in a “Z” bend configuration. The expansion joint absorbs the thermal movement ol horizontal pipelines as lateral defleclion. This can be accomplished in a single plane or three plane configuration. In a three plane “Z ” bend the horizontal pipes may lie at any angle in the horizontal plane since the tied universal expansion joint can absorb lateral deflection in any direction.

What industries use expansion joints?

Expansion joints are used in all kinds of different sectors and in a huge range of different industrial contexts.

• Expansion joints are particularly suited for aggressive chemicals and for abrasion resistance.
• Sunny Steel Metal Expansion Joints can be custom-made from a range of carbon steels, austenitic stainless steels anc ceramic lined.
• Stainless steel pipe expansion joint, with control rods

Specific industries that use expansion joints include the Energy sector such as nuclear power plants and district heating schemes.

Essentially, wherever there is a need to control pipework movement expansion joints are required. They are used in factories and power plants wherever thermal expansion needs to be controlled, such as pipelines that connect with condensers or power turbines. They are used in oil and fuel gas applications.

The Petrochemical industry on oil refineries, pumping stations and oil rigs.

Civil engineering, waste management, sewage treatment, recycling, water treatment, aerospace, aviation, defence, the automotive industry, agriculture, mining, metals manufacturing, food and dairy manufacturing and packaging, and so on.