https://semtex.co.nz/index.php..../services/commercial
want to solder correctly, the biggest mistake most people make when soldering is failing to get the interior of the fitting and the exterior of the pipe clean and shiny. Polish these surfaces with a fine emery clot until bright. When soldering, never heat the pipe, but instead heat the fitting. Doing so allows the solder to be drawn into the fitting by capillary action. On very cold winter nights, allow your faucets to trickle slightly, especially if your pipes are located in a crawlspace. The running water prevents the pipes fro
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