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Hard shell - stainless core

Clad Pipes

Welding Clad Pipes

Complex process of metal bonding

Cladding refers to a process in which a metal, CRA or composite (the cladding material) is mechanically or metallurgically bonded to another dissimilar metal (the backing material) to increase its resistance (e.g. to corrosion) on the one hand and its strength on the other. The majority of clad products manufactured today combines carbon steel for the backing material and e.g. aluminum, nickel, nickel alloys, copper, copper alloys or stainless steel for the cladding material to be bonded. Typically, the purpose of the clad is to protect the underlying steel material from the transported medium. The cost of using clad pipes in pipeline projects is therefore only a fraction of the cost of what it would cost to use a more expensive solid steel alloy for the entire product.

14  - 96

inch outer Diameter


inch min. Wall Thickness


inch max. Wall Thickness

~ 140 K

produced Tonnage 2017-2022



check all API grades & CRA layer grades as per customer specification such as Alloy 625, Alloy 825, TP316L, etc.

check all DNV grades & CRA layer grades as per customer specification such as Alloy 625, Alloy 825, TP316L, etc.

check ASTM A671 / ASTM A672 & CRA layer grades as per customer specification such as Alloy 625, Alloy 825, TP316L, etc.

check further material grades and combinations can be processed per customer specification

Increasing importance of Clad pipes

Driven by the fact that the remaining energy reserves are located in deeper waters and further from shore, more than around 70% of them are corrosive, much more corrosive than the reservoirs being exploited onshore. Engineers act on the assumption than corrosion contributesto more than 50% of offshore pipeline failures. This is because the internal reservoir fluids and gases do significantly increase the corrosion of a conventional pipeline. The ingredients of these gases and fluids are typically aggressive elements such as chlorides, sand, organic acids, carbon dioxides (sweet crude) and hydrogen sulfides (sour crude). While CRA are commonly used to combat corrosion of pipes in sweet and sour crude mediums, nickel based alloys are rather used for resistance to ultra-sour fluids and gases. In addition, the high temperatures and pressures encountered in the subsea well can lead to corrosion in pipelines and risers which are unavoidable to get oil and gas products to the consumers. 

Combination of Corrosion Resistance and Toughness

Environmental conditions such as corrosive medium, growing safety requirements and project cost pressure have changed the dynamics and demands in the pipeline industry. Clad materials combine the corrosive and/or wear resistance properties of corrosion resistant alloys (CRA) respectively high-alloyed materials with the high strength and toughness of carbon manganese steels. This combination results in potential reductions of the total wall thicknesses as well as a minimized need for CRA material both leading to significant cost savings of up to 70% or more, depending upon steel grade and wall thickness.

Reasons to partner with EEW Group

Production Line Clad Pipes

Clad pipe production line

The production facility in the Group’s headquarter in Erndtebrück, Germany, was expanded into a full-scale clad pipe manufacturing production facility. In this way, clad pipe production can run completely independently of traditional carbon steel production

Pickling of Clad Pipes

Inhouse Pickling & Passivating

To ensure an efficient production flow and avoiding external transportation during the production process, a new in-house pickling facility has been installed. This enables direct processing of the clad pipes. With complex solutions, we support the successful implementation of our customers projects.

Laser Measurement Clad Pipes

Laser measurement

In order to meet the highest requirements for the dimensional pipe tolerances they are monitored during production and finally measured and technically approved/verified with state-of-the-art, high-precision laser and coordinate measuring equipment.



Specialist for Clad Pipes

Over recent years, EEW has established itself as a specialist for clad pipes which meet the highest quality standards. We provide high-quality long lasting products to our customers.

Project Management

Strong partner for complex projects

In addition to manufacturing, the EEW service also includes project management and organizing a smooth cooperation with subcontractors. Thus EEW is a strong partner for the implementation of complex projects.

Research & Development

Continuous improvement

In order to continuously improve the EEW technology and know-how an extensive R&D team supports the production and technical departments. Besides the core competence of welding the R&D also focuses on tolerances, raw materials and production flow.


Barzan Pipeline

Year 2017 - 2020
Customer Saipem Italy / Qatargas
Country Qatar
Material L450 + UNS N06625
L450 + UNS N08825
Dimensions diameter 609.6 – 812.8 mm
wall thickness 17.8 – 23.7 mm + 3 mm
Tonnage > 75.000 t

Samsung Hawiyah Gas Reservoir Storage

Year 2020
Customer Samsung Saudi Arabia
Country Saudi Arabia
Material API 5L Gr. X60Q + UNS N08825
Dimensions diameter 812.8 – 1.828.8 mm
wall thickness 25.43 – 58.75 mm
Tonnage 4,431 t

Haradh and Hawiyah Field Gas Compression

Year  2019 - 2020
Customer Cunado
Country Saudi Arabia
Material API 5L Gr. BM / BQ + UNS N08825
Dimensions diameter 406 – 1.524 mm
wall thickness 12,52 – 50,63 mm + 3 mm
Tonnage 6,905 t

Success Stories

The EEW Group has been supplying pipes for various areas of the projects since 2014.

Laser Measurement Clad Pipes

Qatargas’ Barzan Pipeline Project mainly comprises line pipes with outside diameters from 609.6 mm up to 812.8 mm and wall thicknesses from…

Interested in our products?

Get in touch with our Sales Team.

Josh Bleck

Sales Manager | Line Pipes - Clad Pipes

Hendrik Frank

General Manager | Line & Process Pipes

Andreas Schmidt

Head of Sales | Line Pipes