Who has the mechanical drawing CAD DWG body parts drawing?
It is said that Yao Chuang machinery CAD has more than 3700 parts, about 400000000000000 parts library.If you order something free, visit the places like the Chinese mechanical CAD forum.
I have, but it was very difficult when I was studying
Your question is very general, about the valve, there are many kinds, including electronic valves and steel valves, the valve has many kinds, there are butterfly valve, gate valve, stop valve, check valve and so on.
