{
  "$type": "site.standard.document",
  "description": "A quenched steel pipe member is formed of a GI galvanized steel pipe, in a middle section in a longitudinal direction of the GI galvanized steel pipe, a cross-section perpendicular to the longitudinal direction has a substantially V shape including a contact section at which opposite parts of an…",
  "path": "/patents/958956",
  "publishedAt": "2015-07-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B32B15/013",
    "NIPPON STEEL & SUMITOMO METAL CORP [JP]"
  ],
  "textContent": "A quenched steel pipe member is formed of a GI galvanized steel pipe, in a middle section in a longitudinal direction of the GI galvanized steel pipe, a cross-section perpendicular to the longitudinal direction has a substantially V shape including a contact section at which opposite parts of an inner circumferential surface of the GI galvanized steel pipe come into contact with each other, the contact section is bonded using a Fe-Zn alloy phase, and a micro Vickers hardness at a location 50 µm deep from a base material surface layer is 95% or more of a micro Vickers hardness at a location 200 µm deep from the base material surface layer.",
  "title": "QUENCHED STEEL PIPE MEMBER, VEHICLE AXLE BEAM USING THE QUENCHED STEEL PIPE MEMBER, AND METHOD FOR MANUFACTURING THE QUENCHED STEEL PIPE MEMBER"
}