船用铸钢件船用铸钢件船用铸钢件80300DWT散货轮 挂舵臂180000DWT艉柱1100TEU船艉柱24800kg298000DWT挂舵臂 145000kg7600DWT挂臂上铸件73400DWT散货船 艉柱与挂舵臂30000DWT化学品船艉柱
