Number
Name
Status
- GB/T 21838.3-2022 《Metallic materials—Instrumented indentation test for hardness and materials parameters—Part 3:Calibration of reference blocks》 Active Products
- GB/T 230.3-2022 《Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks》 Active Products
- GB/T 17394.2-2022 《Metallic materials—Leeb hardness test—Part 2: Verification and calibration of hardness testers》 Active Products
- GB/T 8914-1988 《Hygienic determination method of mercury in air of residential areas--Gold amalgamation-atomicabsorption spectrometric method》 Active Products
- GB/T 223.53-1987 《Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content》 Active Products
- GB/T 223.54-1987 《Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrophotometric method for the determination of nickel content》 Abolish Products
- GB/T 7728-1987 《Chemical analysis of metallurgical products--General rule for flame atomic absorption spectrometric methods》 Abolish Products
- GB/T 7468-1987 《Water quality--Determination oftotal mercury--Cold atomic absorption spectrophometry》 Active Products
- GB/T 7475-1987 《Water quality--Determination of copper， zinc， lead and cadmium--Atomic absorption spectrometry》 Active Products
- GB/T 6730.49-1986 《Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of sodium and potassium content》 Abolish Products
- GB/T 6730.14-1986 《Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of calcium and magnesium content》 Abolish Products
- GB/T 11911-1989 《Water quality--Determination of iron and manganese--Flame atomic absorption spectrometric method》 Active Products
- GB/T 11912-1989 《Water quality--Determination ofnickel--Flame atomic absorption spectrometric method》 Active Products
- GB/T 11905-1989 《Water quality--Determination ofcalcium and magnesium--Atomic absorption spectrophotometric method》 Active Products
- GB/T 11739-1989 《Standard method forhygienic examination of lead in air of residential areas--Atomic absorption spectrophotometry》 Active Products
- GB/T 11740-1989 《Standard method forhygienic examination of cadmium in air of residential areas--Atomic absorption spectrophotometry》 Active Products
- GB/T 223.46-1989 《Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrometric method for the determination of magnesium content》 Active Products
- GB/T 4333.8-1988 《Methods for chemical analysisof ferrosilicon--The atomic absorption spectrometric method for the deter-mination of calcium content》 Abolish Products
- GB/T 11357-1989 《Quality，Surface roughness and balance oftransmission pulleys》 Abolish Products
- GB/T 131-1993 《Mechanical drawings--Surface roughness symbols and methods of indicating》 Abolish Products
- GB/T 14234-1993 《Surface roughness for plastic parts》 Active Products
- GB/T 13841-1992 《Surface roughness for electronic ceramic parts》 Active Products
- GB/T 15056-1994 《Evaluation method on cast surface roughness》 Abolish Products
- GB/T 1031-1995 《Surface rouglness--Parameters and their values》 Abolish Products
- GB/T 6060.1-1997 《Roughness comparison specimens--Cast surfaces》 Abolish Products
- GB/T 12472-2003 《Geometrical Product Specifications(GPS)--Surface texture:Profile method--Surface roughness parameters and their values for wooden pieces》 Active Products
- GB/T 7220-2004 《Geometrical Product Specifications(GPS)--Surface texture:Profile method--Surfaceroughness--Terminology--Measurement of surface roughness parameters》 Active Products
- GB/T 13580.12-1992 《Determination of sodium andpotassium in the wet precipitation--Atomic absorption spectrophotometry》 Active Products
- GB/T 6060.2-2006 《Roughness comparison specimens - Ground, turned, bored, milled, shaped and planed》 Active Products
- GB/T 6060.3-2008 《Surface roughness comparison specimen － Part 3：Spark-eroded，shot-blasted，grit-blasted，lapped，filed and polished surface》 Active Products