Dalmine S.p.a.

Emanuele Paravicini Bagliani

Ettore Anelli

Héctor Manuel Quintanilla Carmona

Stafano Fare

José Enrique Garcia Gonzalez

Victor Blancas Garcia

Stefano Fare

José Enrique Garcia Gonzales

Disclosed herein are embodiments of a seamless quenched and tempered steel pipe which can have a wall thickness WT higher than or equal to 6 mm and lower than or equal to 35 mm. Some embodiments of the steel pipe can have a chemical composition comprising C, Mn, Si, Cr, Ni, Mo, Al, N, Ca, Nb, Ti, V, Zr, and Ta based on the composition weight, the remaining being iron and impurities. In some embodiments, wherein (V+Nb) content is lower than 0.07 wt %; defining a first parameter P1=(60&#xd7;C)+Cr+[5&#xd7;e]+50&#xd7;(V+Nb), the chemical composition satisfies a first condition P1&#x2266;14.5.

High strength medium wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes

Disclosed herein are embodiments of a seamless quenched and tempered steel pipe having a wall thickness (WT) higher than or equal to 35 mm and lower than or equal to 80 mm. Embodiments of the steel pipe can comprise C, Mn, Cr, Ni, Mo, Al, Ca, N, Nb, Ti, Zr, and Ta. Further, for some embodiments of the steel pipe wherein, defining a first parameter P=50&#xd7;C+Cr+10&#xd7;Mo+70&#xd7;V, the chemical composition can satisfy a first condition P&#x2266;8.0.

Heavy wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes

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Dalmine, Italy

Emanuele Paravicini Bagliani