Connect Blitzwolf wifi socket to samsung smartthings

Hi,

Is it possible to somehow have a blitzwolf wifi socket connected to samsung samrtthing v3 hub?

Not directly. But since it has both an Ifttt integration and an echo integration, you can use one of those methods:

FAQ: WIFI Devices in ST? How can I integrate a WiFi or Bluetooth device that isn’t on the official compatibility list?