We don't have synonyms for buttweld yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are butt weld, butt-weld and butted.
(n) :
The junction formed by this kind of welding.
(v) :
To weld by gradually heating the two ends with a weld plate and then joining them under a specific pressure, used to connect parts which are nearly parallel and do not overlap.
(n) :
The junction formed by this kind of welding.
(v) :
To weld by gradually heating the two ends with a weld plate and then joining them under a specific pressure, used to connect parts which are nearly parallel and do not overlap.