A surface-coated silanized passivated pipeline

By setting amorphous silicon film inner and outer layers and a silicon dioxide film layer on the inner and outer surfaces of stainless steel pipelines, the problems of silanized passivated pipelines during environmental changes and bending processes are solved, achieving oxidation resistance, coating uniformity and bending indication function, and improving the wear resistance and service life of the product.

CN224516157UActive Publication Date: 2026-07-17JINHUA SILICON CROWN TECHNOLOGY CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINHUA SILICON CROWN TECHNOLOGY CO LTD
Filing Date
2025-07-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing silanized passivated pipelines are prone to discoloration, loosening, and detachment in different environments, and cannot indicate the maximum permissible bending degree, affecting functionality and lifespan.

Method used

An amorphous silicon film inner layer and an outer layer are respectively provided on the inner and outer sides of the stainless steel pipe wall. The thickness of the outer layer is 1.5 to 3 times that of the inner layer. A silicon dioxide film layer is added on the outer side of the outer layer as a protective and indicator layer to control the coating process and bending degree.

Benefits of technology

It improves the pipeline's oxidation and wear resistance, ensures uniformity in the coating process, indicates the maximum permissible bending degree, extends service life, and enhances appearance quality.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224516157U_ABST
    Figure CN224516157U_ABST
Patent Text Reader

Abstract

This invention relates to a silanized passivated pipeline with a surface coating. The pipeline includes a stainless steel pipe wall, with an inner layer of amorphous silicon film on the inner side and an outer layer of amorphous silicon film on the outer side. In addition to the above structure, the outer surface of the outer layer of amorphous silicon film is also covered with a silicon dioxide film. Compared with existing pipelines with a brown oxide layer on the outer surface, this new pipeline also has a silanized coating on its outer surface, the chemical composition of which can be the same as or slightly different from that of the inner surface. The pipeline with coatings on both the inner and outer surfaces has the same functionality as a pipeline with only an inner surface coating. The outer coating also protects the stainless steel pipe, indicates the uniformity of heating during the coating process, and indicates the maximum permissible bending degree during use.
Need to check novelty before this filing date? Find Prior Art