Electric resistance welded steel pipe with excellent weld...

Details Electric resistance welded steel pipe with excellent weld... Electric resistance welded steel pipe with excellent weld...

C - Chemistry, Metallurgy

22

C

C22C 38/04 (2006.01) C22C 38/02 (2006.01) C22C 38/06 (2006.01) C22C 38/50 (2006.01)

Patent

CA 2679060

An electric resistance welded steel pipe for line pipe excelling in weld part toughness, exhibiting an area fraction of microdefects of less than 50 µm maximum length in a projection plane of electric resistance weld part ranging from 0.000006 to 0.035 and exhibiting an absorbed energy at -40°C, as measured by a metal material impact testing method, of 100 J or greater.

L'invention concerne un tuyau en acier soudé par résistance électrique pour tube de canalisation présentant une excellente résistance des parties soudées, une fraction de surface de microdéfauts inférieure à 50 µm de longueur au maximum dans un plan en projection de la partie soudée par résistance électrique de l'ordre de 0,000006 à 0,035 et présentant une énergie absorbée à -40 °C, mesurée par un procédé de test par impact de matériau métallique de 100 J ou supérieur.

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