How to test the welding quality of butt welding machine

#hydraulic butt fusion welding machine
#butt welding machine
#butt fusion machine
#https://welpingfusion.com/
#https://welpree.com/
# https://www.facebook.com/102390185489308

#https://welpingtek.com/

https://welpingtek.com/
butt welding machine
butt fusion machine
fusion welding machine
butt fusion welder
thermofusion machine
jointing machine
thermofusion welding

https://welpingtek.com/
butt welding machine
butt fusion machine
fusion welding machine
butt fusion welder
thermofusion machine
jointing machine
thermofusion welding

The size of this machine is 1600 mm, semi-automatic hydraulic type.