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JJG 704-2005: Verification Regulation of Callipers for Welding Inspection
Status: Valid JJG 704: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 704-2005 | English | 499 |
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4 days [Need to translate]
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Verification Regulation of Callipers for Welding Inspection
| Valid |
JJG 704-2005
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| JJG 704-1990 | English | 319 |
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3 days [Need to translate]
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Verification Regulation of Welding Measuring Rulers
| Obsolete |
JJG 704-1990
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PDF similar to JJG 704-2005
Basic data | Standard ID | JJG 704-2005 (JJG704-2005) | | Description (Translated English) | Verification Regulation of Callipers for Welding Inspection | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A52 | | Classification of International Standard | 17.040 | | Word Count Estimation | 19,132 | | Date of Issue | 2005-03-03 | | Date of Implementation | 2005-09-03 | | Older Standard (superseded by this standard) | JJG 704-1990 | | Issuing agency(ies) | State Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to welding inspection foot initial verification, testing and use of follow-up inspection. | JJG 704-2005: Verification Regulation of Callipers for Welding Inspection---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Verification Regulation of Callipers for Welding Inspection
National Metrology Verification Regulations of the People's Republic
Welding inspection ruler
Released on.2005-03-03
2005-09-03 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Replace JJG 704-1990
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 3,.2005, and
It will take effect on September 3,.2005.
Focal Point. National Geometric Quantity Engineering Measurement Technology Committee
Main drafting unit. Shaanxi Institute of Metrology and Testing
Participated in drafting unit. Xi'an University of Architecture and Technology
This regulation entrusts the National Geometric Quantity Engineering Parametric Measurement Technical Committee to explain
The main drafters of this procedure.
Wang Caixia (Shaanxi Institute of Metrology and Testing)
Chang Qing (Shaanxi Institute of Metrology and Testing)
Zhang Lei (Shaanxi Institute of Metrology and Testing)
Participate in the drafters.
Wang Pingan (Xi'an University of Architecture and Technology)
table of Contents
1 Scope (1)
2 Citations (1)
3 Overview (1)
4 Metrology performance requirements (1)
4.1 Height ruler, undercut depth gauge and multi-purpose ruler index line edge to the distance of the main ruler marking surface (1)
4.2 Difference between width and width of ruler mark (1)
4.3 Surface roughness of the measuring surface (1)
4.4 Flatness of the measuring surface (2)
4.5 Angle sample deviation and angle error of the square (3)
4.6 Indication error of linear scale on the edge of the ruler (3)
4.7 Zero-value error and indication error of height gauge (3)
4.8 Zero value error and indication error of undercut depth gauge (3)
4.9 Indication error of width ruler (3)
4.10 indication error of gap gauge (3)
5 General technical requirements (3)
6 measuring instrument control (3)
6.1 Verification conditions (3)
6.2 Verification project (4)
6.3 Verification method (5)
6.4 Processing of verification results (7)
6.5 verification period (7)
Appendix A Technical Requirements for Dedicated Templates (8)
Appendix B Evaluation of Uncertainty in Measurement Results of Undercut Depth Gauge Error (9)
Appendix C Evaluation of Uncertainty in Measurement Results of Angle Gauge Error (12)
Appendix D Verification certificate and verification result notice page format (14)
Welding inspection rule verification procedure
1 Scope
This procedure applies to the first verification, subsequent verification and in-use inspection of the welding inspection rule.
2 Citations
This procedure refers to the following documents.
JJF1001-1998 General measurement terms and definitions
JJF1059-1999 Measurement Uncertainty Evaluation and Representation
JJF1094-2002 Measuring instrument characteristic evaluation
When using this procedure, care should be taken to use the current valid version of the above cited documents.
3 Overview
The welding inspection ruler uses the principle of line and cursor measurement to check the weld width, height and weld room of the welded part.
Measuring instruments such as gap, groove angle, undercut depth, etc. The main structural forms are divided into type I (Fig. 1) and type II (Fig. 2).
Type III (Figure 3) and Type IV (Figure 4).
Figure 1 Welding test rule type I
4 Metrological performance requirements
4.1 Height gauge, undercut depth gauge and multi-purpose ruler index line edge to the distance of the main ruler marking surface
Not more than 0.3mm.
4.2 Width and width difference of the ruler mark
The width of the scale marking should be (0.15 ± 0.05) mm and the width difference is 0.05 mm.
4.3 Surface roughness of the measuring surface
Not more than Ra 0.8 μm.
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