| 摘要 |
The invention is concerned with an abrasive plumber's tool for precleaning metal surfaces, particularly tubes and fittings, preparatory to soldering. The inventive plumber's tool comprises a strap of abrasive material for cleaning the end portions of tubes or pipes and having a cylindrical plug of abrasive material connected to each end for cleaning mating portions of standard fittings, each plug being dimensioned for a different size fitting. Essentially, the plug diameters are designed slightly oversize to insure a uniform abrasive pressure about the interior circumferential area of a fitting and the lengths are designed to insure cleaning of the tube or pipe stop within the fitting. A shoulder is provided extending radially from each plug to fix the extent of insertion within the fitting and to abut and clean the traverse end of the fitting.
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