Question

the fumes from smaw of steel pipe are not unhealthy.
true
false
question 21
the r in 6gr stands for restriction plate.
true
false

Explanation:

• For the first statement: Shielded Metal Arc Welding (SMAW) of steel pipe produces fumes that can contain harmful substances like metal oxides (e.g., iron oxide, manganese oxide). Prolonged exposure to these fumes can cause health issues such as metal fume fever, respiratory problems, etc. So the statement "The fumes from SMAW of steel pipe are not unhealthy" is false.
• For the second statement: In welding, the "R" in 6GR typically stands for "rotated". It is related to a welding position specification. So the statement "The R in 6GR stands for restriction plate" is false.

Answer:

False, False