Specifications for steel-bonded tungsten carbides and determination of its transverse rupture strength, impact toughness and hardness
发布日期:2008-08-11 实施日期:2009-02-01
Workplace air--Determination of tungsten or tungsten carbide--Potassium thiocyanate-titanous trichloride spectrophotometric method
发布日期:1996-01-23 实施日期:1996-07-01
Steel bonded tungsten carbides--Determination of im-pact toughness
实施日期:1990-01-01
Chemical analysis of bismuth concentrates--The thiocyanate photometric method for determination of tungsten trioxide
Steel bonded tungsten carbides--Determination of transverse rupture strength
实施日期:1990-01-01
Determination of tungsten trioxide content in tin concentrates--Thiocyanate photometric method
Technical conditions of steel-bonded tungsten carbide
发布日期:1989-02-17 实施日期:1990-01-01
Steel bonded tungsten carbides--Determination of ROck-well hardness (scales C and A)
实施日期:1990-01-01
Steelbonded tungsten carbides-Determination of transverse rupture strength
实施日期:2002-10-01
Zahnaerztliche rotierende Instrumente. Bohrer. Stahl-und Hartmetallbohrer Dental Rotary Instruments-Burs-Part 1:Steel and Carbide Burs Instruments rotatifs dentaires. Fraises. Fraises en acier et en ca...
实施日期:1999-02-15
Rotary-Drehstangen und Rotary-Bohrwerkzeuge mit Wolframkarbidspitze. Spezifikation Specification for Rotary drill rods and tungsten carbide tipped rotary drill bits Tiges de forage rotatives et trepans...
实施日期:1974-12-31
Steel bonded tungsten carbides-Determination of impact toughness
实施日期:2002-10-01
Chemical analysis of ferro-tungsten. Gravimetric determination of tungsten.
实施日期:1984-10-01
Methods for chemical analysis of high impurity tungsten mineral - Determination of tungsten trioxide content - Twice separation and igniting gravimetric method
发布日期:2011-01-10 实施日期:2011-10-01
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