INNER WALL CORROSION-RESISTING DEVICE FOR WELDED AREA OF STEEL PIPE WITH INTERNALLY COATED LINING

The utility model discloses an inner wall corrosion-resisting device for welded area of steel pipe with internally coated lining, which is characterized in that the sacrificial anode made of lead, magnesium, zinc, or the alloy is connected with a connector lug made of electric conduction metal mater...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIN FA, PIAO SONGZHE
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE
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Beschreibung
Zusammenfassung:	The utility model discloses an inner wall corrosion-resisting device for welded area of steel pipe with internally coated lining, which is characterized in that the sacrificial anode made of lead, magnesium, zinc, or the alloy is connected with a connector lug made of electric conduction metal material, and the outer margin of the connector lug is positioned between the interfaces of two steel pipes; after welded, the sacrificial anode, the connector lug, and the steel pipe together form a firm connecting body; the device can protect the internally coated lining intermittent position of the welded area, so the corrosion prevention for the entire inner wall of the pipe with internally coated lining can be achieved. The utility model has the advantages of simple structure, low cost, and easy installation; the protection degree can reach 95-100%, and service life can be 5-20 years.