The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 1995
Filed:
Oct. 22, 1993
Applicant:
Inventors:
Shigeru Endo, Kawasaki, JP;
Moriyasu Nagae, Kawasaki, JP;
Osamu Hirano, Kawasaki, JP;
Kazuyoshi Ume, Kawasaki, JP;
Assignee:
NKK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428683 ; 138171 ;
Abstract
An abrasion-resistant welded steel pipe having a base plate and a weld metal: consists essentially of 0.05 to 0.2 wt. % C, 0.5 to 2 wt. % Si, 0.5 to 2.5 wt. % Mn, 0.02 to 2 wt. % Al, the balance being Fe and inevitable impurities; and the steel pipe has a Vickers hardness of at least 200. The abrasion-resistant welded steel pipe can further contain at least one element selected from the group consisting of 0.05 to 1 wt. % Cu, 0.05 to 2 wt. % Ni, 0.05 to 2 wt. % Cr, 0.05 to 1 wt. % Mo, 0.005 to 0.1 wt. % Nb, 0.005 to 0.1 wt. % V, 0.005 to 0.1 wt. % Ti, 0.0003 to 0.002 wt. % B.