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The local induction heating process and the whole induction heating process were adopted to develop the X80 φ1219 mm×22 mm induction bends in this paper. After the tempering of the bends, the effect of induction heating on the properties of X80 longitudinal submerged-arc welding line pipe was studied. The results show that for the X80 bend manufactured via the local induction heating, both the tensile strength and yield ratio of unquenched straight tangents are higher than those of the quenched bend area. The toughness of straight tangents is lower than that of the bend area. The strength and toughness of straight tangents do not match perfectly that of the bend area. The induction heating can improve effectively the toughness of weld pipe, reduce the tensile strength and yield ratio to some extent. The whole induction heating makes the match of properties between the straight tangents and the bend area reasonable, thus it is an optimum process for the manufacturing of X80 induction bend.