| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.18 ( May 1988 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Manufacturing Techniques and Characteristics of High Grade ERW Line Pipe API 5L X80 Makoto Fukai, Junichi Karasawa, Osamu Shiotani, Yozo Ogawa, Masahiko Morita, Yoshinori Sugie |
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Synopsis : Kawasaki Steel has been exploring technology for API 5L X80 by 26" Σ ERW pipe mill at Chita Works. It is the most important to develop the high-strength, large-thickness hot rolled coil with excellent toughness and to improve the toughness of welded seam. By adoption of the new controlled-rolling method, edge miller machine and gas-shielded welding technology, Kawasaki Steel has made the development of API 5L X80 ERW line pipe 26"Σ~0.574"t with excellent toughness, whose vTrs of the Charpy impact test is under -32. This paper describes the details of the pipe manufacturing process and the properties obtained. |
| TextiPDF: 7p./383kbj |