Welding balloon

[kjell123898]

Hi, may I ask those of you who have knowledge and where one can buy welding balloon for small bore GTAW welding down to 1/2 "stainless pipe ID. We can get them in Norway but not less than designed for 2" tube only.

Kjell Gr°nvold

 

[metengr]

They are also called inflatable pipe plugs or bladders

http://www.petersenproducts.com/category-s/1972.htm