What kinds of welding electrodes are used in the copper tubes for air conditioning? What's the difference?
There are two kinds, one containing silver, one containing phosphorus. The former is used in a high sulfur environment, and the price is about three times higher than that of the latter
There are two kinds, one containing silver, one containing phosphorus. The former is used in a high sulfur environment, and the price is about three times higher than that of the latter
There are two kinds, one containing silver, one containing phosphorus. The former is used in a high sulfur environment, and the price is about three times higher than that of the latter