Worktops for domestic use have integrated upstands and closed sides.
40mm is the standard height for worktops compatible with most of built-in cooktops; 58 mm is the suggested height for big cooktops (about 900mm wide).
Bowls are always welded.
Technical features:
Stainless steel thickness: 1 mm minimum
Integrated upstands, with back covering on request
Drip edge on request