Marking of technical requirements on drawings
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Shell butt weld: Weld from the outside, ensuring full penetration of the plate. The reverse side should be ground down to the base metal, so that there is 8c quality weld metal; then re-weld.
Shell butt weld: Welding is carried out from the outside with full penetration of the plate; the back side is trimmed to expose the base metal, and high-quality weld metal of type 8c is used for rewelding. Shell butt weld seam: Welding is done from the outside with full penetration, and if there are defects on the back side, high-quality weld metal of type 8c is used as a base for rewelding.
Reweld seems to mean “repair welding”.
Shell butt weld: A butt weld of the plates, carried out from the outside with full penetration of the plates. The back side is carved down to the base metal; the weld metal in that area should be of grade 8C. Rewelding is required. It’s a butt weld of the plates where welding starts from the outside with full penetration; the back side is reduced to the base metal level. Is the 8C mentioned there referring to &? Please post the entire sentence again.
Personal translation: “What needs to be welded is the housing; a butt weld is used, with full penetration required. The welding direction is from outside to inside, and the back side also needs to be processed”… I’m not quite sure about the rest!
I really should study English hard, but it’s difficult at my age.