There is a 1.6 small hole on the joint, and the gap between a 1.6 capillary welding and a 1.6 capillary welding is 0.03-0.15. May I ask what welding method should be adopted to make the welding place withstand the liquid pressure of 100Mp without leakage?Can you tell me if you know something?

If so, use gas welding. Use a high silver electrode, preferably 16% silver or more. If not, use 35% or more.

It can be brazed!The way has silver base or no oxygen copper!