JFE集团知多厂使用曼内斯曼制管法开发出了铬含量为 1 5 %的无缝钢管 ,它是铬含量 1 3 %无缝钢管的第二代产品。目前铬含量 1 3 %的无缝钢管占世界油井管市场 40 %的份额。新开发出的铬 1 5 %无缝钢管可以用于地下更深的天然气运输 ,目前已进入用户试用评价阶段。知多厂从 2 0 JFE Group Chita plant using Mannesmann pipe method developed a chromium content of 15% of the seamless steel pipe, which is chromium content of 13% seamless steel pipe of the second generation. At present, 13% of the seamless steel pipe content of chromium accounts for 40% of the world’s oil well pipe market share. The newly developed chromium 15% seamless steel pipe can be used for deeper underground gas transportation, has now entered the user evaluation stage of the trial. Know more than factory from 20