Pneumatic Internal Pipe Clamp with Gas Purge System This Pneumatic Internal Pipe Clamp with Gas Purge System is for total nickel-based pipe,Website:http://www.pipelineautoweld.com, clad pipe & stainless steel pipe alignment before welding. It can align pipes quickly, forming an inert gas protection inside. It is equipped with an oxygen content measurement device, which can monitor the oxygen real-time to ensure the welding quality. Power source of the internal clamp is compressed air.Technical points and advantages of DP clamp:  · Air flow of inflation system can reach 30L/min.  · Equipped with oxygen meter, the accuracy can be up to 10PPM  · The protective gas inflation is direct, allowing back gas protection.  · Inflation can reduce oxygen content under 100PPM within 2-5 minutes.  · The protection gas vent includes wind & sand proof device.