When a pipe is corrected by using a roll correction machine provided with drum type correction rolls arranged oppositely in the vertical direction, at least the outer layer portions of at least three pairs of correction rolls on the output side of the correction machine is formed of an elastic body having spring type hardness Hs (JIS K6301 A type) of 50-100. An offset amount formed at three positions corresponding to the axis of pipe at the intersections of vertical correction rolls in the above correction rolls, and providing eta, defined by expression (1), of 1.0X10<-3>-1.5X10<-3 >is imparted to the pipe. Consequently, S/N ratio is enhanced in eddy current flaw detection from the inner surface of pipe, inspection efficiency can be enhanced, and excellent quality precision can be ensuredin a heat exchanger tube for use in a steam generator, or the like. [formula 1] eat=(1/R)X(d/2)...(1); where, a relation, R=(delta<2>+L<2>)/2delta is satisfied assuming the outside diameter of the tube is d (mm), the stand distance of roll correction machine is L (mm), and the offset amount is delta (mm).