Before welding structural steel in the field, what must the welder generally verify besides the WPS (welding procedure specification)?

1. That the steel is painted with a heavy final coat so the weld will be hidden
2. That joint fit-up, cleanliness, preheat (when specified), and welder qualification match the WPS and contract
3. That no inspection will ever be required if the weld looks shiny
4. That galvanizing is applied under the weld before the pass is made