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  •  China "YD" Standards List:
    • Standard  Code Standard English Title Standard Class Order
    GB/T 15728-2021 Glass resistance to attack by a boiling hydrochloric acid gravimetric method of test and classification

    China National - YD Standards
    GB/T 6582-2021 Glass—Hydrolytic resisitance of glass grains at 98℃—Method of test and classification

    China National - YD Standards
    GB/T 6017-2021 Determination of purity and hydrocarbon impurities of butadiene for industrial use—Gas chromatographic method

    China National - YD Standards
    GB/T 40285-2021 Technical specification for dam safety analysis and evaluation system of smart hydropower plant

    China National - YD Standards
    GB/T 40222-2021 Guide for smart hydropower plant

    China National - YD Standards
    GB/T 40221-2021 Specification for economic operation system of smart hydropower plant

    China National - YD Standards
    GB/T 40234-2021 Technical requirements of common information models for smart hydropower plant

    China National - YD Standards
    GB/T 40176-2021 Determination of xylobiose in plant-derived products - Hydrophilic intention chromatography

    China National - YD Standards
    GB/T 40130-2021 Specifications for special hydrogeological exploration in coal mines

    China National - YD Standards
    GB/T 40118-2021 Plain bearings—Testing under conditions of hydrodynamic and mixed lubrication in test rigs

    China National - YD Standards
    GB/T 40116-2021 Foil bearings - Performance of hydrodynamic gas journal bearings - Testing of static load capacity, friction coefficient and lifetime

    China National - YD Standards
    GB/T 37162.3-2021 Hydraulic fluid power-Monitoring the level of particulate contamination of the fluid-Part 3:Use of the filter blockage technique

    China National - YD Standards
    GB/T 15242.4-2021 Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 4:Dimensions and tolerances of bearing rings groove

    China National - YD Standards
    GB/T 15242.3-2021 Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 3:Dimensions and tolerances of groove for co-axial seals

    China National - YD Standards
    GB/T 12719-2021 Exploration specification of hydrogeology and engineering geology in mining areas

    China National - YD Standards
    GB/T 6577-2021 Types,dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston

    China National - YD Standards
    GB/T 40080-2021 Nondestructive testing of steel tubes—Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic leaktightness

    China National - YD Standards
    GB/T 40061-2021 Technical specification for liquid hydrogen production system

    China National - YD Standards
    GB/T 40060-2021 Technical requirements for storage and transportation of liquid hydrogen

    China National - YD Standards
    GB/T 40045-2021 Fuel specification for hydrogen powered vehicles—Liquid hydrogen（LH2）

    China National - YD Standards
    GB/T 21718-2021 Fundamental technical requirements for small hydraulic turbines

    China National - YD Standards
    GB/T 2877.2-2021 Hydraulic two-port slip-in cartridge valves—Part 2: Mounting dimensions

    China National - YD Standards
    GB/T 39949.3-2021 Hydraulic fluid power—Mounting dimensions for accessories of single rod cylinder—Part 3: 16 MPa compact series with bores from 250mm to 500mm

    China National - YD Standards
    GB/T 39949.2-2021 Hydraulic fluid power—Mounting dimensions for accessories of single rod cylinder—Part 2:16 MPa compact series with bores from 25 mm to 220 mm

    China National - YD Standards
    GB/T 39949.1-2021 Hydraulic fluid power—Mounting dimensions for accessories of single rod cylinder—Part 1:16 MPa medium and 25 MPa series

    China National - YD Standards
    GB/T 39926-2021 Hydraulic fluid power—Filter element test methods—Thermal conditioning and cold start-up simulation

    China National - YD Standards
    GB/T 39897-2021 Determination of volatile organic compounds and aldehydes and ketones in nonmetallic parts of vehicles

    China National - YD Standards
    GB/T 39831-2021 Hydraulic fluid power—Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10—Clamping dimensions

    China National - YD Standards
    GB/T 39600-2021 Formaldehyde emission grading for wood-based panel and finishing products

    China National - YD Standards
    GB/T 39598-2021 A guide to the limited quantity in indoor loading for wood-based panel based on its ultimate formaldehyde emission

    China National - YD Standards

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