Inventor
FUJIMOTO KUNIHARU
JP3 patents
Patents
3 patentsUS5005395AApr 9, 1991
Method of manufacturing electric welded pipes under hot conditions
SUMITOMO METAL IND8 citations66
US4945743AAug 7, 1990
Apparatus for manufacturing electric welded pipes under hot conditions
SUMITOMO METAL IND5 citations55
US4936723AJun 26, 1990
Method and apparatus for cutting off the beads of seam-welded pipes
SUMITOMO METAL IND0 citations35