Brief introduction of pre coated organic membrane pipe thread

　　Brief introduction of pre coated organic membrane pipe thread:

　　The purification of the surface of the tube in the aluminum before and in the surface pre coated a thin layer of organic film and to protect steel substrate surface oxidation does not occur. The organic material requirement is the leaching of aluminum in the workpiece can all be volatile or all burned, but does not allow the decomposition and carbon deposition. The materials used are glycerin, alkyl amine etc They can protect the steel substrate in 24h by air oxidation. In addition, there are two drunk, prune linseed oil or paraffin. Coating organic film method is simple, but often do not get good results. Low continuity of coating, prone to leakage plating.