Inventor
OHNISHI TOSHIO
JP6 patents
Patents
6 patentsUS6006789ADec 28, 1999
Method of preparing a steel pipe, an apparatus thereof and a steel pipe
KAWASAKI STEEL CO32 citations92
US6216511B1Apr 17, 2001
Apparatus and method for smoothing a welded seam of steel pipe
KAWASAKI STEEL CO16 citations91
US5942132AAug 24, 1999
Method of and apparatus for producing steel pipes
KAWASAKI STEEL CO23 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