Page Tools
Sign up to receive ArcelorMittal Flat Products Industry news alerts by email
Page tools
Share on
Contact us Contact us

Extra-wide coils meet high-tech specs for oil pipelines

Corinth Pipeworks is one of the world’s leading producers of pipes for the energy and construction markets. When the company won a contract to produce more than 850 kilometres of high frequency induction (HFI) welded pipe for a US customer, Corinth again turned to their long-term steel supplier, ArcelorMittal Europe – Flat Products. As well as being the largest HFI project Corinth had undertaken, the order also resulted in the pipe maker’s largest ever order to ArcelorMittal.

Energising Texas

A key requirement for the selection of the steel supplier was the width and properties of the coils required notes Nikolaos Sarsentis, procurement director at Corinth Pipeworks: “The customer specified the hot rolled grade API 5L X65M for their projects. However, the coils needed to be ultra-wide – up to 2.1 metres – and achieve API 5L standards. ArcelorMittal has the capacity, technical competence, and experience to reliably deliver high-quality steel for very large projects such as this.”

The pipes were ordered by Plains All American Pipeline, a leading operator of energy infrastructure in the United States. They will be used in the company’s Cactus II oil pipeline project which links McCamey and Corpus Christi in Texas. The 26-inch pipes will also be used in another oil pipeline between McCamey and Wink, also in Texas. The total length of both pipelines is over 850 kilometres. Corinth Pipeworks has previously delivered over 1,800 kilometres of pipes to Plains All American Pipeline.

HFI pipes at Corinth Pipeworks ready for shipping to Texas

Large diameter requires ultra-wide coils

The hot rolled coils used to form the pipes were produced at ArcelorMittal Bremen (Germany) and ArcelorMittal Fos sur Mer (France). They were shipped to the Corinth Pipeworks manufacturing plant in Thisvi (Greece) where they were formed into 26-inch HFI pipes. “The large diameter of the pipes was the reason why we specified ultra-wide coils,” explains Nikolaos Sarsentis. “The customer also required pipes with two different thicknesses – 10.3 and 12.7 mm.”

The finished pipes were coated externally to protect them from the elements before being shipped to the customer in Houston (USA). “Corinth Pipeworks America, based in Houston, provided the logistics to transport the pipes from the port to the customer’s marshalling yards,” says Nikolaos Sarsentis. “From there, the pipes are being installed by a local contractor. In total, more than 850 kilometres of pipes will be laid in two separate projects to transport oil across Texas.”

European technology meets specifications

The recent addition of tariffs on European steel by the US came as the pipes were being produced in Greece and had a major impact on the project. Nikolaos Sarsentis explains: “The imposition of a 25-percent duty by the US government dramatically increased the cost of the project for our customer. However, no steel producer in the US could meet the customer’s specifications, particularly regarding width. And there are no US pipe makers who can produce the pipes using HFI technology.”

Although the two companies have a long history of working together on major energy projects, this was the largest steel order Corinth Pipeworks has placed with ArcelorMittal Europe – Flat Products to date. Coordination between the two ArcelorMittal mills and Corinth ensured the pipe maker had a continuous stream of material to meet their just-in-time delivery schedule. That enabled Corinth Pipeworks to meet their customer’s tight timetable.

Corinth Pipeworks produces HFI welded pipes directly from the coil in a single, continuous process

PAA Cactus II Project map

Plains All American Pipeline/Texas projects in figures

Pipe   diameter:

26   inches (660.4 mm)

Pipe   length:

23   metres


HFI   welding


X65M   PSL2

Coil width:

2,070   mm


10.3   and 12.7 mm

Coil weight:

37   tonnes


From ArcelorMittal Bremen and ArcelorMittal Fos sur Mer – March to September 2018

Members of the Corinth Pipeworks (CPW) and ArcelorMittal Fos sur Mer teams met in Greece during March to plan the project. Pictured: (front row) Nikolaos Sarsentis (procurement director, CPW); Bernard Dehut (plant director, ArcelorMittal Fos sur Mer), Nena Passa (steel procurement - technical support, CPW); Frederic Bouchaud (ArcelorMittal account manager for CPW). (Middle row) Vassilis Gotsis (plant director, CPW Thisvi), Stephane Brisemure (quality director, ArcelorMittal Fos sur Mer), Guillaume Lesoin (hot strip mill manager, ArcelorMittal Fos sur Mer). (Back row) Ioannis Gourousis (engineering and technology manager, CPW), Stefanos Katsoulas (steel procurement, CPW), Nikolaos Voudouris (quality director, CPW), Arnaud Delame-Lelievre (sales director - energy pipe, ArcelorMittal), Athanasios Tazedakis (chief technical officer, CPW)

HFI pipeline transports oxygen to ArcelorMittal Ghent

As part of an investment programme to reduce carbon emissions at ArcelorMittal Ghent (Belgium), the plant has commissioned a pipeline to transport gaseous oxygen. Covering 35 kilometres, the pipeline is expected to become operational by mid-2019 and will be built, owned, and operated by Air Liquide.

Corinth Pipeworks used steel from ArcelorMittal Krakow (Poland) to manufacture the HFI pipes used in the project. Steel grade L360NE was utilised for its excellent yield strength and toughness. These properties are achieved thanks to the low levels of phosphorous and carbon in the steel.

“The contract for the HFI pipe was awarded to Corinth Pipeworks thanks to their ability to provide long pipe lengths – up to 23 metres,” says Frederic Bouchaud, account manager for oil and gas pipelines at ArcelorMittal. “Although the length of the pipes made handling more difficult, it reduces the number of girth welds required on site. Overall, that reduced installation time and costs significantly.”

ArcelorMittal Krakow accepted the challenge to produce the steel in a short timeframe, notes Frederic Bouchaud: “There was very good cooperation between ArcelorMittal Krakow and Corinth Pipeworks. That enabled us to deliver the project on time.

The 23-metre long pipes were shipped directly from CPW to ArcelorMittal Ghent’s own dock

The extra-long pipes made handling a challenging but reduced installation time and costs

About Corinth Pipeworks

Corinth Pipeworks is a leading steel pipe manufacturer for the oil and gas industry and a major hollow sections supplier to the construction sector. The company makes significant use of technology to create innovative and high-performance products for its global customer base.

More info on Corinth Pipeworks: