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JB/T 7999-2013Bonded Abrasive Products - Testing Methods for the Volume Density, General Porosity and Water Absorption (English PDF)

固结磨具体积密度、总气孔率和吸水率试验方法

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

April 25, 2013

Implementation date

September 1, 2013

Scope

JB/T 7999-2013 is the English-translated version of 固结磨具体积密度、总气孔率和吸水率试验方法.

JB/T 7999-2013 is the Chinese machinery industry standard that gives the test methods for the volume density, the general porosity and the water absorption of bonded abrasive products.

For each of these three properties it states the principle of the determination, the apparatus required and the way the measurement is made. It applies to the determination of bulk density, total porosity and water absorption on bonded abrasives.

Among the standards it quotes are JB/T 6570 and JB/T 11433, and it replaces JB/T 7999-2001. Its Chinese classification is J43 and its international classification 25.100.70.

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Document preview — JB/T 7999-2013

National Standard of the People's Republic of China

ICS: 25.100.70
Replacing: JB/T 7999-2001

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword
Scope
Normative references
About this standard
Related standards
Classification and status

1 Foreword

JB/T 7999-2013 was issued by MIIT on 25 April 2013 and has been in force since 1 September 2013.

It replaces the earlier edition JB/T 7999-2001.

2 Scope

JB/T 7999-2013 is the Chinese machinery industry standard that gives the test methods for the volume density, the general porosity and the water absorption of bonded abrasive products. For each of these three properties it states the principle of the determination, the apparatus required and the way the measurement is made. It applies to the determination of bulk density, total porosity and water absorption on bonded abrasives. Among the standards it quotes are JB/T 6570 and JB/T 11433, and it replaces JB/T 7999-2001. Its Chinese classification is J43 and its international classification 25.100.70.

3 Normative references

JB/T 7999-2013 cites the following standards, which apply in full or in part through the references made to them in its clauses.

JB/T 6570

JB/T 11433

4 About this standard

Issued by: MIIT

English translation: about 15 pages

5 Related standards

Other editions:

JB/T 7999-2001 (earlier edition)

6 Classification and status

International classification (ICS): 25.100.70

Prefix JB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

Similar standards

GB/T 9966.3-2020|GB/T 11927-2025|JB/T 7983-2013|JB/T 8338-2012|JB/T 8339-2012|JB/T 8373-2012

Editions of JB/T 7999

Edition	Title	Revision	Status
JB/T 7999-2013	Bonded Abrasive Products - Testing Methods for the Volume Density, General Porosity and Water Absorption	current edition	Current
JB/T 7999-2001	Bonded Abrasive Products - Testing Methods for the Volume Density, General Porosity and Water Absorption	previous edition	Superseded

This page sells the current edition, JB/T 7999-2013. Earlier editions are listed for reference only.

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