QB/T 4433-2012
Tungsten carbide balls for ball pen (English Version)
- Standard No.
- QB/T 4433-2012
- Language
- Chinese, Available in English version
- Release Date
- 2012
- Published By
- Professional Standard - Light Industry
- Latest
- QB/T 4433-2012
- Scope
- This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of tungsten carbide balls for ballpoint pens. This standard applies to tungsten carbide balls for ballpoint pens (hereinafter referred to as "balls") with a nominal diameter of 0.25 mm to 1.60 mm.
QB/T 4433-2012 Referenced Document
- GB/T 10610 Geometrical Product Specifications(GPS)Surface texture:Profile method.Rules and procedures for the assessment of surface texture
- GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*， 2013-02-15 Update
- GB/T 3488 Hardmetals--Metallographic determination of microstructure
- GB/T 3489 Hardmetals.Metallographic determination of porosity and uncombined carbon*， 2015-12-10 Update
- GB/T 7235 Geometrical Product Specifications(GPS)Methods for the assessment of departure from roundness Measurement of variations in radius
- GB/T 7997 Hardmetals.Vickers hardness test*， 2014-07-24 Update
QB/T 4433-2012 history
- 2012 QB/T 4433-2012 Tungsten carbide balls for ball pen
