JJG 831-1993 Replaced National Metrology and Inspection Regulations JJG

JJG 831-1993 Green Sand Mould Surface Hardness Tester for Castings

JJG 831-1993 Green Sand Mould Surface Hardness Tester for Castings

Publish Date: 1993-07-16 Implement Date: 1994-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJG 831-1993

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 1993-07-16

Implement Date: 1994-02-01

Pages: 9 pages

Scope

This procedure is applicable to the verification of newly manufactured, in-use, and repaired Type A, Type B, and Type C wet surface hardness testers (i.e., sand mold hardness testers) for casting applications.

Development Information

Word Count: 10 Thousand words Pages: 9 pages

Superseded by the following standards

JJG 831-2021 Hardness Testers for Casting Moulds of Sand

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