Φ1 219mm×22mm X80鋼級(jí)含Mo直縫埋弧焊管的開發(fā)

Development of Φ1 219 mm×22 mm LSAW Pipe in Mo-containing X80 Steel Grade

摘要: 通過研制西氣東輸二線天然氣管道工程用Φ1219mm×22mm X80鋼級(jí)含Mo直縫埋弧焊管,研究了X80鋼級(jí)含Mo鋼板的焊接性、熱影響區(qū)的弱化,并對(duì)矩形和圓棒拉伸試樣進(jìn)行了對(duì)比試驗(yàn)分析,對(duì)Φ1219mm×22mm X80鋼級(jí)HTP與含Mo直縫埋弧焊管的主要性能進(jìn)行了對(duì)比分析。提出了厚壁X80鋼級(jí)管線鋼管的拉伸試驗(yàn)應(yīng)采用圓棒試樣的建議。

Abstract: The Φ1 219 mm×22 mm LSAW pipe in Mo-containing X80 steel grade is developed for the project of "No.2 Line of West-East Gas Transmission Pipeline System", covering such activities as studying of the weld- ability of the steel plate in Mo-containing X80 steel grade and weakening of the heat-affected area, comparative tensile test analysis between the result of the test made with a rectangular test piece and that of the test made with a round bar test piece, and the comparative analysis of the main properties between the HTP pipe and the Φ1 219 mm×22 mm LSAW pipe in Mo-containing X80 steel grade. It is proposed that round bar test piece be used for tensile test of the heavy-wall X80 steel linepipe.