FIELD: machine building.
SUBSTANCE: disclosed is a coated metal pipe, which includes a metal pipe and a multilayer coating film, which covers the outer peripheral surface of the metal pipe. Multilayer film of coating includes chemical conversion layer and layer of primer, and these layers are provided in specified order from external peripheral surface of metal pipe. Chemical conversion layer contains zirconium oxide and/or zirconium hydroxide. Primer layer contains polyamidoimide. Primer layer does not contain epoxy resin, or the fraction of epoxy resin in the primer layer is 50 wt. % or less in weight of the primer layer. Also disclosed is a method of producing coated metal pipe.
EFFECT: group of inventions relates to protection of metal pipes from corrosion.
12 cl, 2 dwg, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COATED METAL TUBE FOR THE VEHICLE PIPELINE | 2015 |
|
RU2666846C1 |
| METHOD FOR PRODUCING A CORROSION-RESISTANT STEEL SHEET | 2020 |
|
RU2771720C2 |
| SOLUTION FOR CHEMICAL CONVERSION TREATMENT AND STEEL SHEET SUBJECTED TO CHEMICAL CONVERSION TREATMENT | 2014 |
|
RU2643023C2 |
| COMPOSITE OF THE COATED METHOD OF METAL MATERIAL AND FABRIC CONTAINING CHEMICAL FIBERS AND THE METHOD FOR ITS PRODUCTION | 2016 |
|
RU2651022C1 |
| SOLUTION FOR SURFACE TREATMENT OF COATED STEEL SHEET UNDER HOT PRESSING | 2016 |
|
RU2687326C1 |
| METHOD OF PRODUCING CORROSION-RESISTANT PAINTED ROLLED STEEL WITH ZINC-ALUMINUM-MAGNESIUM COATING | 2020 |
|
RU2727391C1 |
| PROFILED AND COATED METALLIC MATERIAL, COMPOSITE PRODUCT, OBTAINED BY CONNECTION OF PROFILED METAL-COATED MATERIAL WITH MOULDED PRODUCT OF THERMOPLASTIC RESIN COMPOSITION, AND METHOD OF COMPOSITE PRODUCT OBTAINING | 2013 |
|
RU2559455C1 |
| STEEL SHEET WITH COATING AND CONSTRUCTION MATERIAL FOR EXTERNAL USE | 2014 |
|
RU2635583C1 |
| COATED STEEL SHEET AND CONSTRUCTION MATERIAL FOR EXTERNAL USE | 2014 |
|
RU2630091C1 |
| SUBSTRATE WITH COATING FOR PACKAGING APPLICATIONS AND PRODUCTION METHOD OF MENTIONED SUBSTRATE | 2013 |
|
RU2627076C2 |
