Usually we use carbon steel piping in our factory with screwed end connections for small pipes (smaller 3 inch/ DN80) and flanges for larger sized pipes (larger 3 inch/ DN80).
Since butt welded connections are best regarding leakproofness we are considering to use valves with butt weliding ends instead of screwed or flanged ends.
I don’t have any experience with butt welded ending valves and couldn’t find proper information which I need to write the specification. Therefore following questions:
- Which material does the valve body need to have to enable easy and high qualtiy welding with carbon steel pipes?
- Are welded connetions cheaper than screwed or flanged connections?
- Anything else that needs to be considered?