To provide a high tensile steel pipe for hydroform process and a hydroform processed product capable of obtaining a HF component which highly strengthens a desired region without fear of wall thickness reduction through HF process, and which can be produced at a low cost.
A high strength steel pipe for hydroform process which has an aperture 5 piercing preferably in the length direction, in a part of the total length and a resin filling section 2, and by forming this resin filling section in a large pipe expansion predetermined section at the time of HF process, deterioration in stiffness owing to a thinner wall thickness of the pipe 3 can be compensated. And, since this is the hydroform processed product having the resin filling section in the part of the total length, this resin filling section is formed in the thin wall thickness section after HF process, resulting in securing stiffness.
HASHIMOTO YUJI
YORIFUJI AKIRA
