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CRA Clad Pipe | Corrosion Resistant Alloy

CRA clap pipe can help you to buff machines and equipment, enhancing corrosion resistance and strength.

WALDUN have more than 15 years’ experience in providing CRA clap pipes.

You can get high quality CRA clad pipes from WALDUN with competitive price and fast delivery.

Waldun’s CRA Clad Pipes

The CRA clad pipes that we offer here at Waldun come in two types, which are CRA clad seamless pipe and the CRA clad scrolled pipe.

CRA Clad Pipes

CRA Clad Scrolled Pipe

Waldun’s CRA clad scrolled pipe doesn’t have any limit for the upper inner diameter. For the radius, however, it’s required to be at the minimum of 100 mm.

You can choose to have any length for the CRA scrolled pipe. We also recommend the overlay thickness and the base thickness to be at ≧ 4mm and ≧ 5mm, respectively.

CRA Clad Seamless Pipe

For Waldun’s CRA clad seamless pipe, though, it’s perfect use to avoid and prevent weak joints, and for workpieces that have good-to-moderate amounts of roundness.

With the inner diameter, it’s required to be at a minimum of 80 mm. The length requirement of Waldun’s CRA clad seamless pipe should be ten (10) times the diameter.

Features of Waldun’s CRA Clad Pipes

Many companies and businesses choose Waldun’s corrosion resistant clad pipes because of the following features:

Features of CRA Clad Pipes

It conjures stability in hardness and toughness

The surface is flattened and smoothened out

It has proven wear and corrosion resistance

Provides excellent strength and durability

It’s extra-hard because of the fine distribution of chromium carbide

Applications of Our Corrosion-Resistant Clad Pipes

Waldun’s CRA clad pipes are best applied to instances and situations where chemicals are involved.

Applications of CRA Clad Pipes

The best examples would include silos, storages, chutes, fittings, and many more. However, the improvement that Waldun was able to create was that we made it fit to other uses, too!

Whether you’re in the petrochemical industry, the aerospace industry, marine and maritime industry, even in the mining industry, Waldun’s CRA clad seamless and scrolled pipes would benefit you!

CRA Clad Scrolled Pipe

CRA Clad
Scrolled Pipe

Inner diameter: No limit for upper

Inner radius: 100 mm (min.)

Length: No limit

Recommended overlay thickness: ≧4mm

Suggested base material thickness: ≧5mm

CRA Clad Seamless Pipe
CRA Clad
Seamless Pipe

Inner-hardfacing technique

Avoid weak joint

Good roundness

Inner diameter: 80 mm (Min.)

Length:10 times of diameter (Max.)

Recommended overlay thickness:≧4mm

Suggested base material thickness:≧5mm

Why WALDUN CRA Clad Pipe

  • Even distributed and fine chromium carbide precipitate
  • Outstanding wear resistance performance
  • Flat and smooth surface
  • Stable hardness
  • Excellent interface strength
  • High formability and machinability
  • We’re ISO 9001 certified, meaning all our procedures have been enhanced
  • We offer free samples to all potential clients
  • All products and deliveries are made within 2 to 3 weeks
  • Our CRA clad pipes are repairable by welding
  • 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

What Other Products Do We Offer?

Other than CRA clad pipes, you can also trust Waldun if you need hard wearing steel plates, CCO plates, tungsten carbide plates – even other welding machines and equipment.

Contact us and get the CRA clad pipes you’ve always wanted! Get Class A and world-class quality products without spending a fortune!

Get a free quotation for the materials and the clad pipes you’ve been looking for, too!


CRA (Corrosion Resistant Alloy) Clad Pipe – The Ultimate FAQ Guide

CRA clad pipes are among the many different materials used in the chemical industry. Not just that, you can also use them in high corrosion and oxidation areas, too.

It is important that you know everything about CRA clad pipes. Today, we’ll discuss things that revolve around Corrosion Resistant Alloy (CRA) clad pipes; also about other things related to it.

Without further ado, let’s jump straight right on!

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

Where Can You Get CRA Clad Pipes?

You can purchase CRA clad pipes from a lot of companies all across the globe. However, you can get the best ones here in China.

When it comes to producing CRA lines pipes, no other company is better than us here at Waldun. We offer state-of-the-art CRA cladded pipes to our clientele.

Whatever industry you might be in, you can bank on us to help you.

Work with us and get a free sample of the products you need!

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