Gb T 3074 4 2003 Translated English Of Chinese Standard Gbt 3074 4 2003 Gb T3074 4 2003 Gbt3074 4 2003

This Part specifies the principle, apparatus, specimen preparation, test procedures and calculation method for the determination of the coefficient of thermal expansion of graphite electrodes.

This Part of GB/T 3074 specifies determination principles, instruments and equipment, specimen preparation, test steps and results calculation for the coefficient of thermal expansion of graphite electrodes. This Part is applicable to the coefficient of other solid carbon materials of which the ordinary power, high power, ultra-high-power graphite electrode and total expansion at 600-degree does not exceed 1mm, of which the temperature range is room temperature ~ 600-degree. If it needs to test the coefficient of thermal expansion in other temperature ranges, it may refer to this method.

This Part specifies the measurement principle, instruments equipment, samples, test procedure, and result calculation for flexure strength of graphite electrodes. This Part applies to the measurement of graphite electrodes.

This Standard specifies the square and rectangular keys with width of b=8mm~45mm.

This standard specifies the requirements of the basic dimensions for the general purpose metric screw threads according to GB/T 192-2003 and GB/T 193-2003.

This Standard stipulates the determination methods for the thickness reduction value and the hardness reduction value of flexible cellular materials that are used in interior decoration. This test method provides/ evaluates the means for the functional performance of the latex-type and polymeric acid-type flexible cellular materials for bearing decoration. The measured thickness reduction value and hardness reduction value are related to the possible loss in use; but they are not necessarily the same.

This Standard gives guidance on the characteristics of liquefied natural gas (LNG) and the cryogenic materials used in the LNG industry. This Standard also gives guidance on health and safety matters. This Standard is intended to act as a reference document for the implementation of other standards of CEN/TC 282 (Installations and equipment for liquefied natural gas). This Standard is intended as a reference for use by persons who design or operate LNG facilities.

This Standard specifies the method abstract, reagents and materials, instrument and apparatus, test procedures, calculation of results and method precision for the determination of vanadium in coal. This Standard is applicable to lignite, bituminous coal and anthracite.