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WEDOLiT FW 7661 is popular in the manufacture of steel tubes on tube welding engines.
With 3-5% aqueous solution, it fulfils the requirements for lubrication of the working
rollers, cleanliness of the rollers and tubes and spend corrosion protection for the tubes
and the machinery. Furthermore it can be used as additive in hydro-tester solutions to test the
tubes on leak-tightness
With its thermal stability, it can be used not only for cooling of the electrode or the coil and
impeder in high frequency welding, but also in the water cooling line for the weld seam.
The entire tube welding machine can thus be operated with a closed-circuit cooling system,
requiring no intake of other water.