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”≥今5%下一2a≤大4NUwait oil CompanyI小w+Lm4e5sA Subsidiary of Kuwait Petroleum CorporationSTANDARDS PUBLICATIONKOC STANDARD FOREXTERNAL COATING OFUNDERGROUND PIPING/PIPELINES-PART 6:THREE LAYERS EXTRUDEDPOLYETHYLENE/POLYPROPYLENESYSTEMDOC.NO.KOC-P-004 PART 6(Rev.4)STANDARDS TEAM
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