can you help me please, is there any bus go from Hangzhou to Beijing?

Sorry to tell you no bus is available between the two cities.
You are suggested to take a bullet train from HZ East Station to Beijing South. The duration is about 5h – 6h 40 minutes; and the fare is CNY538.5 for a second class seat, CNY907 for a first class seat.

but abovementioned that from north bus station coaches depart to Shandong , Beijing..

Well, there may be a time adjustment on long-distance buses now. You are suggested to take a train or flight. High speed train takes about 6h and flight takes no more than 2.5h.