Posted by Hydraulic line? on April 19, 2008 at 15:24:07 from (68.149.51.25):
In Reply to: welding help advice posted by hay on April 19, 2008 at 07:49:48:
Any heat might damage the seals. Arc welding hyd. lines is usually not recommended as cracks can start in the heat affected zone beside the weld. Hydraulic tubing is very high grade steel. Brazing or O/A welding can sometimes be used to repair hyd. tubing. If brazing, the brass has to be build up enough that it will hold the same pressure as the steel tube. Brass is much softer and lower tensile strength. It's best if the pipe is open at least on one end so it can't build up pressure. I have seen long steel lines brazed while in place but it is still best to take it off if you can.
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