Title:
連続チュービングを製造する方法及び熱間圧延ミル
Document Type and Number:
Japanese Patent JP5689776
Kind Code:
B2
Abstract:
Continuous coil tubing made from shorter lengths of flat metal strip which are spliced end-to-end and formed into tubular form and seam welded and thereafter introduced into a forging or hot reduction process. Finished coil tubing is withdrawn from the process at a different rate than flat metal strip is fed into the process. Welds made to the flat metal strip blend into and substantially disappear from the finished coil tubing.
Inventors:
デュボイズ，ジョン
Application Number:
JP2011222525A
Publication Date:
March 25, 2015
Filing Date:
October 07, 2011
Export Citation:
Assignee:
ジョン・ディー・デュボイス
International Classes:
B21B17/14; B21C37/08; B21B31/20; B21B35/00; B21B35/04; B21C37/18; B21C47/26
Attorney, Agent or Firm:
Ono Shinjiro
Kobayashi 泰
Akio Chiba
Hiroyuki Tomita
Yasuaki Komiyama
Kobayashi 泰
Akio Chiba
Hiroyuki Tomita
Yasuaki Komiyama