1) shell sections and heads
筒节和封头
2) Cylinder and end socket
筒体与封头
3) double-ended spherical-top tube
双封闭球头筒
1.
Process and die design of double-ended spherical-top tube narrowing-mouth;
双封闭球头筒缩口工艺与模具设计
4) boiler drum ellipsoidal head
锅筒椭圆形封头
1.
The formula which ascertain the coordinates center of the circle of the manhole skirt transitional circular arc of boiler drum ellipsoidal head has been deduced,which can be a reference when it is drawn by computer.
推导出确定锅炉锅筒椭圆形封头人孔板边过渡圆心坐标的公式,可供计算机绘图时的参考。
5) roll end
卷筒纸用封头纸
6) seal bore extension
密封筒加长短节
补充资料：封筒
1.犹束装。 2.封套。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条