Thanks all.
It has been a great help. Ledon's experience confirmed our finding at this moment. We are still working on the details of the parts to make welding process easier. I wonder if ledon has more information so that I do not have to spend too much time to optimize our process.
Thanks...
I am looking for an equipment or technology which can join the two lead pipes together without soldering them. It more likes the quality of "lead buring" Process. Someone has seen it was done by "Mig Welder". If anyone has any information, please let me know.