A .470kN
B .616kN
C .642kN
D .645kN
[单选题]N-80钢级,内径62.0mm,壁厚5.5mm加厚API油管,接头最小连接强度为()。A.470kNB.616kNC.642kND.645kN
[单选题]J-55钢级,内径62.0mm,壁厚5.5mm平式API油管,接头最小连接强度为()。A.323kNB.443kNC.470kND.645kN
[单选题]J-55钢级,内径62.0mm,壁厚5.5mm平式API油管,接头最小连接强度为()。A .323kNB .443kNC .470kND .645kN
[单选题]壁厚5.5mm,内径62.0mm的油管外径是()。A.73mmB.72mmC.67.5mmD.66mm
[单选题]壁厚5.5mm,内径62.0mm的油管外径是()。A .73mmB .72mmC .67.5mmD .66mm
[单选题]外径是73mm的油管其壁厚为5.5mm,内径为φ()mm。A . 75.9B . 62C . 80D . 82
[单选题]钢级为N-80的套管最小屈服强度是()Mpa。A . 80B . 256C . 552D . 300
[单选题]内径54.64mm,壁厚9.19mm,外径73.02mm,API型钻杆(D55类)的抗扭屈服极限是()。A.25520N·mB.21736N·mC.18716N·mD.12460N·m
[单选题]内径54.64mm,壁厚9.19mm,外径73.02mm,API型钻杆(D55类)的抗扭屈服极限是()。A .25520N•mB .21736N•mC .18716N•mD .12460N•m
[判断题] 同钢级相同壁厚的油管,内径越大,抗压越低。()A . 正确B . 错误