Patents Assigned to HAN SUNG MINUTENESS STEEL PIPE CO.,LTD.
  • Zinc coating-forming method for drawing of metallic pipes
    Patent number: 10577702
    Abstract: The present invention provides a zinc coating-forming method for drawing of metallic pipes, including a degreasing step of degreasing a material to be drawn, which is composed of any one of aluminum, an aluminum alloy, copper, and a copper alloy; a first oxidation step of forming an oxide coating on a surface of the material to be drawn, which has been degreased in the degreasing step; and a second oxidation step of forming a zinc coating on the material to be drawn, which has been coated with an oxide.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 3, 2020
    Assignee: HAN SUNG MINUTENESS STEEL PIPE CO., LTD.
    Inventor: Chan Sic Yune
  • ZINC COATING-FORMING METHOD FOR DRAWING OF METALLIC PIPES
    Publication number: 20180127889
    Abstract: The present invention provides a zinc coating-forming method for drawing of metallic pipes, including a degreasing step of degreasing a material to be drawn, which is composed of any one of aluminum, an aluminum alloy, copper, and a copper alloy; a first oxidation step of forming an oxide coating on a surface of the material to be drawn, which has been degreased in the degreasing step; and a second oxidation step of forming a zinc coating on the material to be drawn, which has been coated with an oxide.
    Type: Application
    Filed: November 3, 2017
    Publication date: May 10, 2018
    Applicant: HAN SUNG MINUTENESS STEEL PIPE CO.,LTD.
    Inventor: Chan Sic YUNE