GB/T 12767-1991
粉末冶金制品 表面粗糙度 参数及其数值
Powder metallurgy products--Surface roughness--Parameters and their values
- 实施日期
- 1992-05-01
- ICS 分类
- 77.040.30
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB/T 12767-1991
Powder metallurgy products--Surface roughness--Parameters and their values
GB/T 12582-1990
Liquid hydrocarbons--Determination of electrical conductivity--Precision meter
GB/T 11108-1989
Test method for thermal diffusivity of hardmetal (carbide)
GB/T 11107-1989
Metallic and its compound powder--Determination of specific surface and particle size by air permeating method
GB/T 8756-1988
Collection of metallographs on defects of crystallinegermanium
GB/T 8755-1988
Collection of metallographs on titanium and titanium alloy terms
GB/T 8493-1987
Metallograph of cast carbon steels for general engineering purposes
GB/T 7216-1987
Gray cast iron metallography
GB/T 4236-1984
Steel--Examination by sulphur print (Baumann method)
GB/T 4197-1984
Method for measuring the average grain size of sintered bar and rod of tungsten molybdenum and alloys
GB/T 4196-1984
Method for testing the density of tungsten and molybdenum bars
GB/T 4195-1984
Method for measuring the distribution of the powder size of tungsten and molybdenum method by the balance for the fall of the particles
GB/T 4194-1984
Creep testing,high temperature treatment and metallographic examination of the tungsten wires
GB/T 4193-1984
Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuumtubes