PARESA and ESAB collaborating to improve Double-Sided Submerged Arc Welding for cryogenic Ni9 steel tanks

PARESA is pleased to share the article published by the Welding Journal – a trade magazine delivering each month news of the welding and metal fabricating industry – concerning the “Advances in the filler metals for LNG tank welding”: Welding Journal – LNG Ni9 tank welding

“As has been shown in this article, even well-established companies can benefit by starting a dialogue with experts who combine filler metal, process, and LNG tank application expertise.”

Here is a short abstract of the article:

“From extraction, to processing, to transportation to points of use, natural gas and liquefied natural gas (LNG) seem inexorably linked to welding.

In this article, experts from ESAB’s LNG segment division, who work with customers around the globe, share some of the solutions developed to solve LNG tank welding challenges.

Double-sided submerged arc welding (DSAW) offers the highest level of productivity for on-site LNG tank welding, [though it] is complex and requires highly skilled and experienced welding personnel to execute the process in a highly productive manner.

One such company is Paresa S.p.A. of Cesena, Italy. Founded in 1978, this multi­discipline, single-source contractor is a leading fabricator and installer of storage facilities used by refineries, terminals, depots, and power plants throughout Europe, Africa, and South America.

In 2018, the company invited ESAB to help improve DSAW results for tanks made from Ni9 nickel steel.

Paresa wanted to have a greater margin of safety for meeting mechanical properties while reducing concerns related to hot cracking and moisture absorption in filler metals.

«While Paresa needed to learn to walk before running, the company now welds at a marathon pace, giving it production efficiencies and a competitive advantage».

As has been shown in this article, even well-established companies can benefit by starting a dialogue with experts who combine filler metal, process, and LNG tank application expertise.”