GB/T 6730.44-2017
PublishedIron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthol spectrophotometric method
- Issued
- 2017-09-07
- Effective
- 2018-06-01
Chinese National Standards
Browse selected Chinese national standards, including mandatory GB standards and recommended GB/T standards prepared for English search and inquiry workflows.
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GB/T 20887.7-2017
Published- Issued
- 2017-09-07
- Effective
- 2018-06-01
GB/T 20564.2-2017
PublishedContinuously cold rolled high strength steel sheet and strip for automobile—Part 2: Dual phase steel
- Issued
- 2017-09-07
- Effective
- 2018-06-01
GB/T 34193-2017
PublishedGuides for energy efficiency assessment of blast furnace process
- Issued
- 2017-09-07
- Effective
- 2018-06-01
GB/T 20887.6-2017
Published- Issued
- 2017-09-07
- Effective
- 2018-06-01
GB/T 34107-2017
PublishedSeamless precision stainless steel pipes for rail transit vehicle braking system
- Issued
- 2017-07-31
- Effective
- 2018-04-01
GB/T 33878-2017
PublishedSteel cross wedge rollings—Technological design principle
- Issued
- 2017-07-12
- Effective
- 2018-02-01
GB/T 33965-2017
Published- Issued
- 2017-07-12
- Effective
- 2018-04-01
GB/T 4291-2017
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