ISO 2951-1974 - 中外标准 - - 1974/11 - 作废
Specifies an empirical method that gives a value for insulation resistance which includes, without discrimination, both volume and surface resistance. This value can be used for the comparison of the quality of different insulation vulcanized rubbers. The methods are particularly useful for rapidly determining values which will give a general indication of quality when great accuracy is not required.
CNS 3562-2007 - 中外标准 - - 1974/8 - 现行
CNS 3554-2007 - 中外标准 - - 1974/8 - 现行
ISO 2556-1974 - 中外标准 - - 1974/6 - 现行
Specification of the methodand of two types of suitable test apparatus. The plastic test specimen separates two chambers, the one contains the test gas at atmospheric pressure, the other of known initial volume has the air pumped out until the pressure is practically zero. The quantity of gas which passes through the specimen from one chamber to the other is determined as a function of time by measuring the increase in pressure occuring in the second chamber by means of a manometer.
板测定板条塑料薄膜塑料定义压力试验压力计扩散测量透气性气体薄板材薄膜箔BoardsBushingsDefinitionsDeterminationDiffusionFoilGas permeabilityGasesMeasurementMeasuring instrumentsPanelsPermabilityPlastic filmsPlasticsPlatesPressurePressure gaugesPressure testsSheetsTest resultsTest specimensTestingThin films
ISO 2044-1974 - 中外标准 - - 1974/5 - 废止
Specifies a test for checking the resistance of such fittings to internal pressure in a solvent welded test assembly. This is subjected to an internal pressure of 4.2 times the nominal pressure for 60 minutes. No deterioration, leakage or fracture shall occur.
ISO 2035-1974 - 中外标准 - - 1974/5 - 废止
Specification of a test method for verification of the rupture strength and tightness of a pipe-fitting-assembly, which is subjected to a specified internal pressure for not less than 1 h. Applicable to fittings and pipes having a nominal diameter less than or equal to 160 mm.
ISO 2536-1974 - 中外标准 - - 1974/4 - 废止
Gives the principal dimensions of loose backing flanges for use with solvent-welded flange adaptors. Applies to flanges for pipe sizes from 16 to 315 mm outside diameters and for nominal pressures up to 1 MPa (= 10 bar).