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NS 5923-1981 Hydraulic fluid power - Filter elements - Verification of flow fatigue characteristics (ISO 3724 1976).pdf
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NS 5922-1981 Hydraulic fluid power - Filter elements - Verification of material compatibility with fluids (ISO 2943 1974).pdf
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NS 416-1-2008 Operators for welding of polyethylene (PE) and polypropylen (PP) pipes and fittings - Part 1 Certification《聚乙烯(PE)和聚丙烯(PP)管和配件的焊接用操作人员 第1部分 认证》.pdf
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NS 415-2-2007 In-service inspectors - Part 2 Syllabus for oil and gas (offshore petrochemical refineries).pdf
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NS 415-1-2007 In-service inspectors - Part 1 Rules for examination and certification.pdf
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NS 415-1-2007 A1-2012 Amendment A1 - In-service inspectors - Part 1 Rules for examination and certification.pdf
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NS 4145-1984 Marking of horses - Freeze marking.pdf
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NS 2610-1969 Shipbuilding - Derrick booms.pdf
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NS 2598-1967 Shipdrawings - Basic lines plans.pdf
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NS 2597-1967 Shipdrawings - Special statements.pdf
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