How to test the welding quality of butt welding machine

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

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

@https://welpingtek.com/
#hdpe pipe jointing machine
#hdpe pipe welding machine

Fusion butt welding machine Suitable for butt welding of PE, PP, PPR, and PVDF plastic pipes and fittings in trenches on site or in workshops.

Hot-fusion butt welding machine for butt welding of PE, PP, PPR, and PVDF plastic pipes and fittings in grooves on site or in the workshop.

How to test the circuit connection of the butt welding machine? The video demonstrates the use of a clamp ammeter for this purpose.