SURFACE PREPARATION

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SURFACE PREPARATION

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This technology analyzes environment and features of fluid of the pipeline or water pipeline with our accumulated experience in pipeline cleaning, inspection & lining. This technology offers Total Service such as inspection, assessment, cleaning, lining and maintenance for deteriorated pipeline with our self-developed technology & state-of-the-art equipment.

    A-1.Outline of Surface preparation

    Ç¥¸éÁ¶µµ Surface preparation should be satisfied with client's requirement and remarked specification, and should be acceptable to the work site and environment. Surface preparation can be devided to cleaning inside method and surface profile method. It gives major impact to the quality of the rehabilitation construction. Generally it would be processed to form the surface profile from 25~100§­(1~4mils).

    A-2.Standard of Surface preparation

    Comparison chart of blasting grade
    SSPC SIS 055900 BS 4232 NACE
    White Metal(SP5) Sa 3 1st Quality Grade 1
    Near White Metal (SP10) Sa 2¨ö 2nd Quality Grade 2
    Commercial Finish (SP6) Sa 2 3rd Quality Grade 3
    Light Blast & Brush Off Sa 1 N/A Grade 4

    A-3.Comparator(ASTM D 4417) and profile measuring equipment.

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