Title:
A Azur type K55 Electric resistance seam oil well pipe and a hot-rolled steel product
Document Type and Number:
Japanese Patent JP6179692
Kind Code:
B1
Abstract:
質量％で、Ｃ：０．３０〜０．５０％、Ｓｉ：０．０５〜０．４０％、Ｍｎ：０．５０〜１．２０％、Ｐ：０〜０．０３０％、Ｓ：０〜０．０２０％、Ａｌ：０．００２〜０．０８０％、Ｎ：０〜０．００８０％、Ｃｕ：０〜０．３０％、Ｎｉ：０〜０．３０％、Ｃｒ：０〜０．３０％、Ｍｏ：０〜０．１０％、Ｖ：０〜０．１０％、Ｎｂ：０〜０．０５０％、Ｔｉ：０〜０．０３０％、Ｃａ：０〜０．０１００％、並びに残部：Ｆｅ及び不純物からなり、母材９０°位置のＬ断面における管厚１／４位置の金属組織は、旧γ粒が偏平しているフェライト−パーライト組織であり、粒界フェライトと粒内フェライトとを含み、粒界フェライト及び粒内フェライトの合計面積率が１０〜３０％であるアズロール型Ｋ５５電縫油井管。
Inventors:
Tetsuo Ishizuka
Takashi Tsusue
Shuji Iwamoto
Shunichi Kobayashi
Toshiyuki Ogata
Osamu Yoshida
Kono Hideto
Takashi Tsusue
Shuji Iwamoto
Shunichi Kobayashi
Toshiyuki Ogata
Osamu Yoshida
Kono Hideto
Application Number:
JP2017509785A
Publication Date:
August 16, 2017
Filing Date:
October 31, 2016
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; C22C38/50
Domestic Patent References:
| JPS6148518A | 1986-03-10 | |||
| JPS61221331A | 1986-10-01 | |||
| JP2012132060A | 2012-07-12 | |||
| JPS63247311A | 1988-10-14 | |||
| JPS6289813A | 1987-04-24 | |||
| JPS57145928A | 1982-09-09 | |||
| JP2011089152A | 2011-05-06 |
Foreign References:
| WO2013153676A1 | 2013-10-17 |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office
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