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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "reflecting" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 17248.2-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
    声学-机器和设备发射的噪声-在一个反射面上方可忽略环境修正的近似自由场测定工作位置和其他指定位置的发射声压级
    China National Standards
    reflecting

    English PDF
    GB/T 25261-2018 Solar heat reflecting insulation coatings for buildings
    建筑用反射隔热涂料
    China National Standards
    reflecting

    English PDF
    GB/T 3768-2017 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane
    声学 声压法测定噪声源声功率级和声能量级 采用反射面上方包络测量面的简易法
    China National Standards
    reflecting

    English PDF
    GB/T 7660.3-2013 reflecting prisms―Part 3: Optical parallelism and test method
    反射棱镜 第3部分:光学平行度及其检验方法
    China National Standards
    reflecting

    English PDF
    GB/T 7660.2-2013 reflecting prisms―Part 2: Characteritics of image rotation
    反射棱镜 第2部分:像偏转特性
    China National Standards
    reflecting

    English PDF
    GB/T 7660.1-2013 reflecting prisms―Part 1: Geometrical characteritics
    反射棱镜 第1部分:几何特性
    China National Standards
    reflecting

    English PDF
    GB/T 3768-1996 Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using an enveloping measurement surface over a reflecting plane
    声学 声压法测定噪声源声功率级 反射面上方采用包络测量表面的简易法
    China National Standards
    reflecting

    English PDF
    GB/T 3767-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for an essentially free field over a reflecting plane
    声学 声压法测定噪声源声功率级和声能量级 反射面上方近似自由场的工程法
    China National Standards
    reflecting

    English PDF
    GB/T 3767-1996 Acoustics--Determination of sound power levels of noise sources using sound pressure--Engineering method in an essentially free field over a reflecting plane
    声学 声压法测定噪声源声功率级 反射面上方近似自由场的工程法
    China National Standards
    reflecting

    English PDF
    GB/T 32524.2-2016 Acoustics—Determination of sound power level and directivity character of power capacitor using sound pressure—Part 2: Engineering methods for an essentially free field over a reflecting plane
    声学 声压法测定电力电容器单元的声功率级和指向特性 第2部分:反射面上方近似自由场的工程法
    China National Standards
    reflecting

    English PDF
    GB/T 25261-2010 Solar heat reflecting insulation coatings for buildings
    建筑用反射隔热涂料
    China National Standards
    reflecting

    English PDF
    GB/T 17248.2-1999 Acoustics--Noise emitted by machinery and equipment--Measurement of emission sound pressure levels at a work station and at otherspecified positions--Engineering method in an essentially free field over a reflecting plane
    声学 机器和设备发射的噪声 工作位置和其他指定位置发射声压级的测量 一个反射面上方近似自由场的工程法
    China National Standards
    reflecting

    English PDF

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