JB/T 51138-1999

Product quality grading of engine cylinder block casting

Standard Type

JBT

ICS

27.020

CCS

J92

Status

N/A

Issue Date

1999-12-30

Implementation

2000-06-01

Centralized Committee

National Foundry Standardization Committee

Issuing Authority

State Bureau of Machinery Industry

Catalogue

Scope, References, Material, Defect, Test

Scope

Engine casting production, incoming inspection

Applicable to engine cylinder block casting

Normative References

GB/T 2828.1-2012

Keywords

Cylinder block casting porosity sand inclusion mechanical property

Application Summary AI generated

1. Graded by internal defect and mechanical property

2. Controls dimensional precision and geometric tolerance

3. Standardizes flaw detection and hydraulic test

4. Classified defect sampling.

Standard Timeline

replaces JB/T 51138.1

replaces 51138.3-94

Related Standards

JB/T 6728.2-2008 Internal combustion engines - Camshafts - Part 2: Wedge-cross rolling blanks JB/T 51185-1999 Volute Mixed-Flow Pump - Product Quality Grading (Internal Use) JB/T 51116-1999 Internal combustion engines - Oil pumps - Product quality grading (Internal use) JB/T 51111-1999 Internal combustion engines - Paper element oil filter assemblies - Product quality grading (Internal use) JB/T 51114-1999 Internal combustion engines - Cooling water pumps - Product quality grading (Internal use) JB/T 51118-1999 Internal combustion engines - Full round main bearings - Product quality grading (Internal use) JB/T 51115-1999 Diesel engines - Hydraulic speed governors - Product quality grading (Internal use) JB/T 51119-1999 Internal combustion engines - Valve tappets - Product quality grading (Internal use)

Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.