clad pipe

Cladding Pipe

Chromium Carbide Overlay 

Cladding pipe is a pipe cladded by a pipe cladding machine. Cladding pipe usually is a metallurgical attachment of clad material to a pipe. If you are looking for such pipes, you can contact WALDUN.

WALDUN is one of the top company for manufacturing cladding pipe. WALDUN Also can provide you related machine for production of cladding pipe.

Cladding Pipe Details:

  • Cladding pipe – chromium carbide overlay consists of Q235 steel pipe and chromium carbide wear-resistant layer, which generally accounts for 1/3-2/3 of the total thickness of the pipe.
  • Between the wear-resistant layer and the base material is the Metallurgy Union, the wear-resistant layer will not fall off, can withstand the big impact;
  • The processing and forming of wear pipe adopts two methods of rolling wear-resistant steel plate or directly surfacing welding in seamless pipe
  • The wear-resistant layer formed by surfacing welding inside the tube has the same performance as the wear-resistant steel plate
  • The method of surfacing welding wear-resistant pipe is flanged connection and welded connection
  • Build-up welding wear-resistant pipe can be processed into elbow, tee, cone, square pipe and so on
  • The minimum CRIMP radius is 20 times the thickness of the plate.

Cladding Pipe Characteristics:


Adopt numerical control equipment, automatic inner wall surfacing welding chromium carbide alloy material, wear-resistant grain wear performance, adopt metallurgical fusion method, wear-resistant layer and base material realize metallurgical bond, namely atomic bond. The thickness of wear-resistant layer is 1 ~ 20mm, and the wear resistance is about 3-5 times of that of ordinary steel pipe.


The base pipe of the hardfacing wear-resistant pipe is made of low carbon steel pipe with good plasticity, which is metallurgically bonded to the wear-resistant layer and can absorb a large amount of energy during the process of being impacted, with strong impact resistance and crack resistance, it can be applied to vibration, impact of strong working conditions.

Cutting features:

Due to the use of soft base pipe, can be plasma, carbon arc and other heat source cutting, can be welded into shape, so that the field welding work becomes time-saving and convenient.

Pressure characteristics:

External use of high-quality steel pipe or steel plate hot pressing system, after good welding, make elbow in 10Kg / CM2 pressure above, no problem, will not occur because of local leakage, and the phenomenon of material diversion.

Cladding Pipe Technical Parameter:

  • Pipe diameter: bigger than 100 mm
  • Inner Material: Chromium Carbide
  • Connection: Flange, Butt Weld
  • Inner layer thickness: Over 3mm
  • Inner hardness: HRC60
  • Length of single root: unlimited
  • Extreme stress: Class A
  • Corrosion resistance: good
  • PACKING: Wooden case, bare package
  • Working temperature:-60 °C ~ 800 °C
  • REPAIRABLE: repairable by welding
  • Supply Cycle: 10 days
  • Payment: TT, LC, OA available
  • DRAWING DESIGN: available

Cladding Pipe Applications:

  • Metallurgical and power industry: transport coal powder, Ash, slurry, gypsum slurry and other metal pipes.
  • Mining: The pipe used to transport ore fines,the service life of this pipe can be increased about five times, comparing to previous pipes.
  • Coal: Coal Preparation and long-distance pipeline transportation are generally wet transportation, which requires both wear-resistant and corrosion-resistant pipeline, which can be used as a long-life pipeline, with considerable economic benefits.

How we produce clad pipe?

  • The wear pipe is mainly made by hardfacing technology, the mechanical part of the equipment is designed reasonably, the electric part adopts the key surface input data, which can be connected with other equipment and welding machine freely The walking speed can be adjusted at any time according to the need, the welding pass can be arranged automatically, the welding wire can be deposited continuously, the wire feeding is automatic, the swing speed and width of the welding torch can be set by yourself; In the welding process, the height of welding torch is automatically tracked by independent research and Development System to improve the overall efficiency.

Clad pipe transport and installation

  • Hardfacing wear-resisting pipe can be installed directly by welding. Because of the high resistance of the wear-resisting layer, it is very convenient to knock, cut, replace, repair and install the pipe at will when local scaling and blocking occurs in the pipe guide.

Cladding Pipe – The Ultimate FAQ Guide

Pipes have a crucial role in every industry there is. Industrial and manufacturing companies need strong, tougher, and wear-resistant pipes. But pipes are usually just made from regular materials – how can you improve this? In this guide, you will learn everything you need to know about cladding pipes. What it is, what it’s used for, and how you can take advantage of it.

What is a Clad Pipe?

Clad pipes are materials formed from bonding a pipe and a cladding material, metallurgically.

What is a Clad Pipe
Examples of clad pipes nearing the finishing or the finalization stage

The majority of clad pipes globally manufactured are used in natural gas industries, as well as chemical and oil refineries because of their high resistance to pressure and temperature.

What is SGP Pipe Material?

Also known as carbon steel pipe for ordinary piping, is a type of piping material galvanized of zin-coating.

What is SGP Pipe Material_
SGP or carbon steel pipes that are being prepared for distribution

You’d use an SGP pipe materials in a wide array of applications, including:

  • Non-water supply piping
  • Fire fighting
  • Industrial water services
  • Wastewater services
  • Heating, Ventilation, and Air-Conditioning (HVAC); and

How is a Clad Pipe Manufactured?

As opposed to how many people think, a clad pipe isn’t manufactured like how regular pipes are.

How is a Clad Pipe Manufactured
A process in clad pipe manufacturing where the corrosion resistant alloy (CRA) is applied

Here’s the simplest summary for you to understand how a clad pipe is manufactured:

  1. The clad plates are prepared and treated accordingly for the process
  2. Our raw materials are consisted of a base or a parent material plus a corrosion resistant alloy (CRA)
  3. Using press brakes and other equipment of the likes, the plates are individually formed
  4. Once formed, the insides of the newly-formed pipe are grit blasted
  5. The CRA material is applied within the diameter of the pipe
  6. After application, it’s fused via metallurgical bonding
  7. The entire output is treated and is tested before being sent to factories for distribution

How are Clad Pipes Installed?

You’ll be able to install clad pipes easy – even easier if you’re certain with the sizes and measurements.

How are Clad Pipes Installed_
An installed clad pipe used for transporting fluids and gasses

Installing clad pipes does not fall far from how you would install regular pipe and tube fittings.

For large-diameter pipes, though, you would need certain machines to help you with lifting and positioning.

What is an Inconel Clad Pipe?

Inconel is a family or a group of superalloys that have nickel-chromium as its base.

What is an Inconel Clad Pipe
Inconel that is applied and/or deposited to a base or a parent metal

The term “Inconel” is a registered trademark for this specific collection of superalloys.

That brings us to an Inconel clad pipe being a pipe, with Inconel as its cladding within the diameter.

So why do businesses and companies utilize an Inconel clad pipe? They do so because of the following perks and benefits:

Advantages of Inconel Clad Pipes

Advantages of Inconel Clad Pipes

Inconel clad pipes that would be used for marine or underwater applications

Reduction of Project Costs

Many businesses confirmed that Inconel cladding has helped them save a lot of money; this is in comparison to producing solid alloy components.

Not only does it save costs – there are other benefits too!

Best Used in Subsea and Offshore Environments

Any type of Inconel is a superalloy that contains agents that prevent corrosion and oxidation.

Therefore, Inconel clad pipes are best for a wide variety of marine and underwater applications, including:

  • Shipbuilding and shipyard applications
  • Petrochemical industry
  • Oil and gas industries

Instant Re-Certification

Did you know that refurbishing a clad pipe with Inconel will bring certification?

This is a practice that has been observed for many years, and it’s still going to continue because of Inconel’s properties.

These are just some of the most common advantages of utilizing Inconel clad pipes, there are many more!

Why is a Clad Pipe Important in the Oil Industry

Corrosion is among the biggest enemies of pipes, tubes, and other types of fitting.

Why is a Clad Pipe Important in the Oil Industry
Clad pipes that have been installed to move fluids and gasses from one point to another

In fact, corrosion accounts up to $2.2 trillion as a whole.

The oil industry is an industry where chemical reactions take place more often than we expect, and therefore, a clad pipe is best for that.

Because pipe cladding produces corrosion-resistant pipes, you wouldn’t have to worry about whatever type of fluid your pipes will ever experience.

Furthermore, clad pipes will be able to resist higher temperatures, bigger impacts, and environments where wear is more susceptible.

Pipe Coating vs. Pipe Cladding

How does pipe cladding and pipe coating differ? Aren’t they the same process? – No, they’re not.

Pipe Coating
Pipe used for earth purposes being coated via a thermal or a fuse spray

While they hold a lot of similarities, both procedures are distinct from one another.

Pipe coating can give you a ton of advantages, such as making a pipe corrosion resistant. But, its application is only on the surface of the pipe or tube.

No metallurgical bonding is required! Sometimes, the use of thermal and fuse sprays is all you need!

Pipe cladding, on the contrary, is a process that involves a metallurgical bonding of the pipe with a corrosion resistant alloy. Oftentimes, the clad material is deposited and applied within the inner diameter of the pipe or the tube.

How is a Clad Pipe Metallurgically Bonded?

How is a Clad Pipe Metallurgically Bonded

A phase in metallurgical bonding of a thin pipe

Since the discovery of metalurgically bonding clad pipes, many companies and businesses have used varying methods of metallurgically bonding.

They include:

  • Extrusion
  • Centrifugal Casting
  • Weld Cladding

Difference Between Mechanical and Metallurgical Bond

The two (2) terms fit well with one another. In fact, you don’t have to be a physics expert if you want to define each of them.

Mechanical bonding is a type of fusing technique, which is an entanglement of two (2) or more parts. These parts are fused without altering the chemical composition or bonds that the materials have.

For you to understand it easier, you can imagine it as applying or putting cheese or butter on a bread slice.

Metallurgical bonding, on the other hand, is a procedure that gives you a better guarantee of the output. It’s the result of chemical bonding of two (2) metals that can be dissimilar with one another.

There are a lot of clues in distinguishing a metallurgical bond from a mechanical bond; this is the easiest.

What is Pipe Cladding?

Pipe cladding simply is the process of applying cladding material to a pipe. Pipe Cladding

It usually is a metallurgical attachment of clad material to a pipe.

What is the Cladding Pipe Process?

Cladding Pipe Process The general cladding pipe process is quite simple and easy-to-understand. It goes as follows:

  1. One or more metals are selected to be joined together
  2. You’ll join these metals by welding it to the surface of the parent material
  3. This process is done to improve the material in all angles and aspects

Where Can You Apply and Use Clad Pipes?

You can use cladded pipes mostly in certain situations and scenarios, where there is: Clad Pipes Application

  • High Pressure
  • Dynamic and High Stress
  • High Levels of Corrosiveness and Abrasion
  • High Temperatures

In addition to that, cladding pipe is highly beneficial for certain industries like:

  • Mining Industry
  • Gas and Oil Industry
  • Manufacturing Industry
  • And Others

What are the Different Pipe Cladding Methods?

Pipe Cladding Methods

The different methods you can take in cladding pipe are: Hot Rolling It’s a process where the pipe is bonded with the clad by heating the base metal. You would allow the base metal to pass through hot rollers, and thus, the hot rolling process. Explosion Bonding This process involves explosives and the process is simple:

  • The steel pipe would be lined with the cladding
  • Calculated explosives would be placed on the cladding surface
  • With heat and pressure combined, the explosion would bond the pipe and the clad together

Powder Metallurgy In this process, you will use a layer of powdered material on the interior part of the pipe. Then, you’ll melt the material via electrical currents, heat, lasers, or other mediums. Coextrusion This process uses molten or near molten metal, creating extruded pipes. Coextrusion means that the cladding pipe is made through both the liner and the exterior pipe at the same time.

Weld Overlay

Weld overlay is a process that is the deposition of materials to a surface or a parent material.

Weld Overlay Pipe

More often than not, you would use materials with the same properties as the workpiece. This enhances the base metal.

What is Overlay?

Overlay is the process of covering something up using coating material through welding. In overlay, you ought to use metals with the same characteristics to that of parent workpiece.

Is Overlay the Same as Cladding Pipes?

No, weld overlay and pipe cladding are two different processes. Overlay Not the Same as Pipes They have the same goal, but you’d do each of them in a different manner. Pipe cladding is the process of applying protective material over the surface of the base metal. The use of cladding is to deposit abrasion and corrosion resistant properties to the surface. Weld overlay is a process of improving prudent properties of the base metal itself. It is done by depositing metals with the same characteristics that of the parent material.

What is CRA Cladding?

CRA cladding is the type of cladding that uses CRA material to cover and protect the surface. CRA Cladding Short for corrosion resistant alloy, you would need CRA cladding if you aim for highly-corrosion resistant properties.

What are Clad Materials?

Clad materials are materials that fuse two or more metal types through bonding. Clad Materials These clad materials you can make will have unique properties coming from the metals used.

What is Pipe Lining?

Pipe lining is a process that you can do to restore pipes that have been subject to wear. Pipe Lining You can perform pipe lining by coating the pipes’ interior to create longer-lasting material.

Why is Cladding Pipes Important in the Oil and Gas Industry?

The oil and the gas industries are the industries that are most prone to corrosion. Both industries deposit high levels of sulfur and carbon dioxide. Because of this, corrosion in their parts and materials is easy. Oil and Gas Industry If you’re in the business and you need to create more corrosion-resistant pipes, pipe cladding is the way to go.

Is Pipe Lining and Pipe Cladding the Same?

No, cladding pipes and lining pipes are not the same. They are two different methods that have different outcomes. Pipe lining refers to a process where you bond a pipe and a line material. Pipe Lining or Cladding Pipe cladding is the process in which you would bond cladding material and a pipe. The goal of the former is to withstand rough and absurd chemical environments. Cladding pipes is used mainly to resist corrosion in high stress and high temperature environments.

What are the Advantages of Cladding Pipes?

Some of the pros or advantages of cladding pipes include: Advantage of Cladding Pipe

  • Improved crack and wear resistance
  • It’ll be able to withstand extreme temperatures, pressure, and stress
  • Provides air and chemical pollution resistance
  • More workable with high heat

What Does the Term CRA Mean?

CRA is short for what’s called a corrosion resistant alloy.

What CRA Means

They’re special alloys you can use to buff machines and equipment, enhancing corrosion resistance and strength.

Common Types of Corrosion

Types of Corrosion

In case you’re not aware, there area actually different types of corrosion, they include:

  • High Temperature Corrosion (Oxidation)
  • Atmospheric Corrosion
  • Galvanic Corrosion
  • Pitting Corrosion
  • Crevice Corrosion

Corrosion Resistant Alloys (CRA) Examples

It’s not just one product – in fact, there are many examples of corrosion resistant alloys.

CRA Examples

The most common corrosion resistant alloy families include:

Copper-Based Alloys

Alloys that are copper based have exemplary quality electrical and thermal conductivity.

You can use them in salt water, water, air, as well as within an environment where inorganic chemicals are present.

Nickel Based

Nickel based alloys perform well when it comes to corrosion resistance. You can use them in fresh water, caustic alkalis, in the normal atmosphere, and so on!

Stainless Steel

The most common type of corrosion resistant alloys, it creates a level of oxide that heals itself.

What’s a CRA Clad Pipe?

It’s a steel pipe that’s been cladded with CRA material. They’re combined either through metallurgical or mechanical bonding.

CRA Clad Pipe

You’ll find use for it if you’re in an industry prone to corrosion and rust.

Oftentimes, CRA clad pipes are used in the Oil & Gas industry, the Chemical industry, Pipeline transport, Marine industry, Natural Gas industry, and so on.

CRA Materials: What Are They?

CRA materials are materials that have high levels and degrees of resistance to corrosion.

They’re the ones you add to parts and components to improve its resistance properties.

How is a CRA Clad Pipe Manufactured and Created?

How is a CRA clad pipe created, you ask? Well, the process in which CRA clad pipes are created isn’t actually complex.

CRA Clad Pipe Manufactured and Created

In fact, it can be bonded through many different processes such as:

  • Coextrusion
  • Explosion Bonding
  • Hot Rolling
  • Weld Overlay
  • Powder Metallurgy
  • And Many More

You can make or create CRA clad pipes by using processes that produce a metallurgical bond.

Process of CRA Clad Pipe Manufacturing

Process of Clad Pipe Manufacturing

Whatever bonding or fusion process it may be, it’ll always follow this particular structure:

  1. Preparation of the pipe to be cladded
  2. Grit blasting of the inside of the pipe
  3. Application of corrosion resistant materials
  4. Fusion of the CRA material to the pipe

This is the entire process of creating or manufacturing a CRA clad pipe. It’s not complicated as how it looks like. However, it’s a long process because it needs to make sure that the process was successful.

What’s the Difference Between Lining and Cladding?

Many people get confused in discussing the two. When in reality, it’s actually easy to determine!

Difference Between Lining and Cladding

Both are processes to improve and enhance a pipe; but they’re quite distinctively different.

Pipe cladding is a metallurgical bonding process between cladding material and the pipe. Pipe lining, on the other hand, is the mechanical bonding process of the material to the pipe.

You would want to apply cladding if you want a corrosion resistant pipe. Lining, if you want an abrasion resistant pipe.

They’re two fusion methods with different goals and objectives.

CRA Clad Pipe Welding

CRA clad pipe welding is a fusion process you can use to deposit CRA material to a pipe.

CRA Clad Pipe Welding

It’s one of the many techniques to fuse and combine CRA materials to parts and components.

How are CRA Clad Pipes Tested and Inspected?

There are many different tests you can do to measure the effectiveness of CRA clad pipes.

Clad Pipes Tested and Inspected

Some of which include:

  • Fracture Toughness Tests
  • Flattening Tests
  • Residual Magnetism
  • Ultrasonic Inspection
  • Guided Bend Tests
  • CRA Liner and Cladding Bond Strength Tests
  • Tensile Tests
  • And Many More

Different tests and assessments measure different results.

What is Non-Destructive Test (NDT)?

It’s a type of testing process that carefully analyzes a certain material’s properties.

Non-Destructive Test

You can find and distinguish it as it is the last step of a manufacturing process.

Before it gets delivered, it needs to undergo the NDT first.

Why Should You Use a CRA Clad Pipe?

Why Use a CRA Clad Pipe_

If you are in the chemical industry, or any other industry prone to corrosion, you can use CRA clad pipes to:

  • Prevent easy corrosion to your pipes
  • Prolong and lengthen the lives of your pipes
  • Save money from frequent purchasing of piping and tubing
  • And many more

What’s the Main Advantage Can You Get From Using a CRA Clad Pipe?

The main purpose of a CRA clad pipe is to prevent corrosion from occurring.

Main Advantage of Using CRA Clad Pipe

The properties of CRA materials make this easy, allowing your pipes to stay healthy and free from corrosion. Aside from that, other benefits you can get from it include:

  • Better productivity
  • Less damages of your pipes
  • Faster operations
  • Healthier working environment
  • Stronger and much more reinforced pipes
  • And so on

What are the Disadvantages of Cladding Pipes?

Disadvantage of Pipe Cladding The cons or the disadvantages of cladding pipe are:

  • More expensive than the regular pipe lining process
  • Requires higher grade materials that are hard to find
  • Needs excellent and accurate welding skills to pursue

Who Can Help You With Pipe Cladding?

There are a lot of companies that can help you with hardfacing or with cladding pipes. Cladding Pipe Service But if you’re here for the best, then Waldun is the company that you should go with. Waldun offers state-of-the-art services for hardfacing, cladding, weld overlay, etc. We invested in cutting-edge technology to bring you the quality of the products you need.

How Can You Get a Cladding Pipe Service?

In case you need to get a pipe cladding service, just contact a company you know via email. Tell them about your request. It’s always helpful to include all relevant information in your initial email.

Let’s review each of them in details.