When filler metal is graded for rigid control fabrication, the purchaser receives _____
a. AWS Specification A5.7
b. a Certificate of Conformance
c. a Certified Chemical Analysis report
d. no record of chemical composition or strength
b
You might also like to view...
The refrigerant lines for single zone mini-split air conditioners are usually connected by:
A) Brazed connections. B) Reflok fittings. C) SAE compression fittings. D) Flare fittings.
When should a garden be watered?
What will be an ideal response?
What power tools are required to have a positive "on-off" control?
What will be an ideal response?
Why do most humidifiers require annual cleaning and media replacement?
A) A chemical reaction between the media and the water causes a crusty white buildup. B) The media is slowly dissolved by the water used in the humidifier. C) Minerals in the water are left behind in the sump and media. D) The water attracts dirt from the air.