POSCO develops large-diameter pipes for hydrogen transportation

Lim Chang-won Reporter() | Posted : October 19, 2021, 17:05 | Updated : October 19, 2021, 17:05

[Courtesy of POSCO]

SEOUL -- South Korea's steel group POSCO has developed large-diameter pipes that would be used for the transportation of hydrogen gas at domestic hydrogen pilot cities by using a new steel material that greatly improved the lifespan and safety of welded connections to withstand rupture or corrosion.

Imported seamless steel pipes with a diameter of less than six inches have been mainly used for hydrogen transfer pipes, but South Korean cities designated for hydrogen pilot projects would use pipes with an eight-inch diameter. POSCO would start supplying hydrogen pipes to Ansan, an industrial city southwest of Seoul.

Usually, welding steel pipes are used as large-diameter pipes, but securing the safety of welding portions was an obstacle. POSCO said the weld of its pipes demonstrated the world's best safety to withstand shocks even at minus 45 degrees Celsius.

POSCO said it would work with Korea Gas Safety Corporation (KOGAS), a state gas safety management body, to push for the construction of a 700km long hydrogen pipe network by 2030. South Korea has designated Ansan, Ulsan, Jeonju and Wanju as cities to carry out pilot projects for the construction of hydrogen infrastructure.
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