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  •  China "YD" Standards List:
    • Standard  Code Standard English Title Standard Class Order
    GB/T 7467-1987 Water quality--Determination of chromium(Άφ)--1£¬5 Diphenylcarbohydrazide spectrophotometric method

    China National - YD Standards
    GB/T 7130-1986 Determination of free phenols in phenol-formaldehyde mouldings--Iodometric method

    China National - YD Standards
    GB/T 6577-1986 Hydraulic fluid power--Cylinders--Piston seal housings incorporating bearing rings--Dimensions and tolerances

    China National - YD Standards
    GB/T 6275-1986 Ammonium hydrogen carbonate for industrial use

    China National - YD Standards
    GB/T 5474-1985 Phenol-formaldehyde mouldings--Determination of free ammonia and ammonium compounds--Colorimetric comparison method

    China National - YD Standards
    GB/T 5473-1985 Phenol-formaldehyde mouldings--Detection of free ammonia

    China National - YD Standards
    GB/T 4333.1-1984 Methods for chemical analysis of ferrosilicon--The perchloric acid dehydration-gravimetric method for the determination of silicon content

    China National - YD Standards
    GB/T 3501-1983 Technical requirements of super fine ruthenium dioxide hydrate powder

    China National - YD Standards
    GB/T 3144-1982 Toluene--Determination of hydrocarbon impurities--Gas chromatographic method

    China National - YD Standards
    GB/T 2880-1981 Hydraulic fluid power--Cylinder rod and piston seals for reciprocating applications--Dimensions andtolerances of housings--Narrow section series

    China National - YD Standards
    GB/T 2347-1980 Hydraulic fluid power--Pumps and motors--Geometric displacements

    China National - YD Standards

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