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GB/T 12212-2012: Technical drawings -- Dimensions, proportions and simplified representation for welding symbols
Status: Valid GB/T 12212: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12212-2012 | English | 649 |
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Technical drawings -- Dimensions, proportions and simplified representation for welding symbols
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GB/T 12212-2012
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| GB/T 12212-1990 | English | RFQ |
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Technical drawings--Dimensions, proportions and simplified representation for welding symbols
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GB/T 12212-1990
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PDF similar to GB/T 12212-2012
Basic data | Standard ID | GB/T 12212-2012 (GB/T12212-2012) | | Description (Translated English) | Technical drawings -- Dimensions, proportions and simplified representation for welding symbols | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 01.100 | | Word Count Estimation | 28,268 | | Older Standard (superseded by this standard) | GB/T 12212-1990 | | Quoted Standard | GB/T 324; GB/T 4458.1; GB/T 4458.3; GB/T 4458.6; GB/T 4457.4; GB/T 14691; GB/T 16901.1 | | Regulation (derived from) | National Standards Bulletin No. 9 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the general requirements for painting welds and weld symbol size, proportions and simplified representation. This standard applies to technical drawings and related technical documentation. | GB/T 12212-2012: Technical drawings -- Dimensions, proportions and simplified representation for welding symbols
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Technical drawings. Dimensions, proportions and simplified representation for welding symbols
ICS 01.100
J04
National Standards of People's Republic of China
Replacing GB/T 12212-1990
Technical drawings
Weld symbol size, proportions and simplified representation
Dimensions, proportionsandsimplifiedrepresentationforweldingsymbols
Issued on. 2012-05-11
2012-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 12212-1990 "welding symbols Technical drawings - Dimensions, proportions and simplified representation."
This standard and GB/T 12212-1990, compared the main technical changes are as follows.
--- Increasing the foreword;
--- Revised 4.1 titled "Overview"; the content was changed to "when drawing a weld, the available views, or cross-sectional view showing a sectional view, can also be used
Isometric view schematically showing ";
--- Revised 4.2.1 "freehand" to "schematic drawing", "thick line" to "bold line", "b" to "d";
--- Revised 4.3 "sectional view" to "sectional view";
--- 5.1.3 amended to "in any pattern, the line width of welding symbols, welding symbols font glyphs, character height and font width strokes
Degree should linewidth and pattern of other symbols (such as the size of the symbols, surface texture symbols, geometric tolerance symbols), fonts, font, character height
Stroke width and the same ";
--- 5.1.4 modified to "weld symbol baseline consists of two mutually parallel thin solid line and thin dotted lines, reference lines are generally in FIG.
Long sample of the title bar parallel sides; if necessary, can also be perpendicular to the long side of the phase pattern of the title bar. 11. Weld symbol refers
Wire drawing by solid lines ";
11 --- modified text "arrow line" for the "Leader", "(broken line)" to "(thin broken line)";
Table 1 --- modified text "outline width" is "visible outline width";
--- Increasing the basic symbols in Table 2 Size and Scale (No. 14 to 20);
--- Combined the original standard in Tables 3 and 4;
--- Table 3 supplement increased size and scale of symbols (numbers 4-6);
--- Remove the dimensions and proportions of the original standard table No. 41 of supplementary symbols.
This standard by the National Technical product documentation Standardization Technical Committee (SAC/TC146) and focal points.
This standard was drafted. the machine Productivity Promotion Center, Bolton (Hefei) Co., Ltd. Drive, Anhui Ankai Automobile Parts China (Hefei)
Ltd. Shaanxi Province Product Quality Supervision, Inspection, Anhui Institute of Standardization, Dalian Maritime University.
The main drafters of this standard. thanks to Yang, Xue Ming, Yang Yikui, King of War, Ding Changdong, Zouyu Tang, Han Zhenyu, Liu Caiyun.
The standard replaces the previous editions are.
--- GB/T 12212-1990.
Technical drawings
Weld symbol size, proportions and simplified representation
1 Scope
This standard specifies the general requirements for the weld and weld symbols of painting Dimensions, proportions and simplified representation.
This standard applies to technical drawings and related technical documentation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 324 Weld notation
GB/T 4458.1 Mechanical drawings - General view
GB/T 4458.3 Mechanical Drawing isometric drawing
GB/T 4458.6 Mechanical sectional drawings - view and a sectional view
GB/T 4457.4 Mechanical drawings Fatou line
GB/T 14691 Technical Drawing Font
GB/T 16901.1 technical documents represent the first part of the rule of graphical symbols. Basic rules
3 Basic requirements
In technical drawings, usually by welding symbols GB/T 324 provisions represent weld. Can also be GB/T 4458.1, GB/T 4458.3
And the provisions of GB/T 4458.6 representation weld.
4 illustrates a method
4.1 Overview
When drawing welds, available views, or cross-sectional view showing a sectional view, can also be used isometric view schematically showing.
4.2 Views
As shown in Figure 4.2.1 Weld painting. 1 and 2, showing a series of weld thin solid line allow schematically drawn, also allow the use of bold line (2d ~
3d) shows the weld, as shown in Figure 3. But at the same pattern, only permits a painting. Spot welds, seam welds, plug welds and weld groove
In the longitudinal direction or radial view painting in Table 2.
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