pipe和tube在英语里有什么区别吗？

石化方面一般用pipe-- pipeline

技术上tube和pipe是有区别,重点在管子的尺寸上,公称直径15mm以下用tube,而在此之上用PIPE.
你说的肯定是直径15mm以上的粗管子了，不能使用Tube.
tube
KK: []
DJ: []
n.[C]
1. 管;筒
He slipped the telescope into a steel tube.
他将望远镜收进一根钢管内。
2. (装牙膏等的)软管[(+of)]
I need a tube of tooth paste.
我需要一管牙膏。
3. (轮胎的)内胎
4. (动,植物的)管状器官
5. 电子管,真空管
6. 【英】(有时大写)地下铁(道)[the S]
She goes to work by tube.
她乘地铁上班。
7. 【美】【俚】电视,电视机[the S]
8. 管状隧道
9. 【澳】【口】【俚】一罐(啤酒)[(+of)]
10. 【俚】香烟
vt.
1. 给...装上管子;把...弄成管状
2. 用管输送
3. 【美】【俚】未通过(考试)
She tubed every test last week.
她上星期测验门门不及格。
vi.
1. 坐内胎顺流而下
pipe
KK: []
DJ: []
n.
1. 管,导管,输送管[C]
They are laying pipes under the road.
他们正在铺设路下面的管子。
2. 烟斗[C]
His father is a pipe-smoker.
他父亲是抽烟斗的。
3. 管乐器;笛[C]
He is playing a tune on his pipe.
他在用笛子吹奏一支曲子。
4. 笛声;鸟鸣声;尖锐的声音[U]
5. 管状器官;呼吸器官[C]
6. (液量单位)最大桶[C],大酒桶
7. 【口】容易干的事
vt.
1. 用管道输送[H][(+into/to)]
Water was piped into the village two years ago.
两年前水由管子通到了村里。
Gas is piped into all the houses.
瓦斯由管道输送到各家各户。
2. (用尖声)说话,唱歌;尖声鸣叫
The woman piped her disapproval.
那妇人尖声嚷叫不赞成。
3. 用管乐器吹奏
I'll pipe your favorite song.
我来吹奏那支你喜欢听的歌。
4. 为...铺设管道
Our neighborhood will be piped for gas.
我们这个地区将要铺设煤气管。
5. 为(衣服)滚边;为(糕饼)浇饰花边
vi.
1. 吹奏管乐
2. 尖声叫嚷,尖声鸣叫
Wind was piping in the woods.
风在林中呼啸。

A pipe is a vessel - a tube is structural. (pipe是容液的—“管为”原义，tube是结构性的—“管型”结构)
A pipe is measured ID - a tube is measured OD. (pipe以内径标称大小，tube以外径标称大小)
How they are measured... Pipes are measured ID or inside diameter because they are vessels. Tubes are measured OD or outside diameter because they are structural.

pipe可以是管道，tube是试管，不一样。

两头通的都可用pipe