One set of small & big of pipe size怎么翻译?

问题描述:

One set of small & big of pipe size怎么翻译?
One set of small & big of pipe size
请问这句怎么翻译?
是一套?还是各一套?

set套嘛
one set一套呀
后面都是不同型号,大大小小的管材.