Inventor
KAGAWA MASAHIRO
JP5 patents
Patents
5 patentsUS6216511B1Apr 17, 2001
Apparatus and method for smoothing a welded seam of steel pipe
KAWASAKI STEEL CO16 citations91
US6375059B2Apr 23, 2002
Method for smoothing steel pipe seam portion
KAWASAKI STEEL CO6 citations72
US6216940B1Apr 17, 2001
Pipe forming roll apparatus and method
KAWASAKI STEEL CO10 citations71
US6041632AMar 28, 2000
Pipe forming roll apparatus and method
KAWASAKI STEEL CO9 citations71
US4760724AAug 2, 1988
Method of and apparatus for controlling operation of a cross helical rolling mill
KAWASAKI STEEL CO12 citations70