METHOD FOR MANUFACTURING STEEL PIPE HAVING EXCELLENT CRACK RESISTANCE AT WELDED PART

• Main Authors: PARK YOUNG HWAN, BAE HONG YEOL, SONG WOO HYUN
• Format: Patent
• Language: English; Korean
• Published: 29.06.2020
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PUNCHING METAL; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The present invention relates to technology for manufacturing a steel pipe such as a line pipe, and specifically, to a steel pipe having excellent crack resistance in a welded portion and a method for manufacturing the same. 본 발명은 라인 파이프 등의 강관을 제조하는 기술에 관한 것으로서, 용접부의 균열 저항성이 우수한 강관과 이를 제조하는 방법에 관한 것이다.