Pervouralsk New Tube (Novotrubny) Works (Pervouralsk, Russia):

An. V. Serebryakov, Cand. Eng., Head of the group of new types of tubes for nuclear power industry, e-mail: andrey.serebryakov@chelpipe.ru
V. V. Maltsev, Head of KhDT production complex
I. N. Bazhukov, Leading engineer-researcher, the group of new types of tubes for nuclear power industry

Ural Federal University (Ekaterinburg, Russia):
Al. V. Serebryakov, Cand. Eng., Associate Prof.
S. I. Parshakov, Cand. Eng., Associate Prof.

Tsindrakova T. V., Kalabin S. V., Komelskikh S. G. (JSC Pervouralsk New Tube (Novotrubny) Works) took part in the work.

Liquefied natural gas (LNG) is one of the most promising types of fuel. For LNG production, the key type of equipment is spiral-wound heatexchange equipment, whose manufacture requires seamless stainless tubes in coils. Today, providing LNG equipment with domestic tubes is an urgent task. JSC PNTZ has developed and mastered the technology for production of seamless stainless tubes in coils. The technology was implemented in the manufacture and delivery to a customer of industrial batches of tubes. As a result of statistical analysis, it was found that the new technology ensures the stability of the tensile strength σ_в and relative elongation δ5 along the length of the tube in a coil and between batches (coils) and the compliance of mechanical properties with the GOST 9941–81 requirements.

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