GB/T 15055-2021 PDF English
US$155.00 · In stock · Download in 9 secondsGB/T 15055-2021: Permissible stamping variations in dimensions without tolerance indication Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 15055: Evolution and historical versions
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
GB/T 15055-2021 | English | 155 |
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Permissible stamping variations in dimensions without tolerance indication
| Valid |
GB/T 15055-2007 | English | 70 |
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Permissible stamping variations in dimensions without tolerance indication
| Obsolete |
GB/T 15055-1994 | English | 279 |
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3 days
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Permissible stamping varitions in dimensions without tolerance indication
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 15055-2021
GB/T 15055-2021: Permissible stamping variations in dimensions without tolerance indication---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT15055-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.020
CCS J 32
Replacing GB/T 15055-2007
Permissible stamping variations in dimensions without
tolerance indication
Issued on. OCTOBER 11, 2021
Implemented on. MAY 01, 2022
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Tolerance grades... 9
5 Limit deviation of dimensions without tolerance indication... 9
6 Representation method for grades of tolerances without indication... 10
1 Scope
This document specifies linear and angular dimension tolerance grades and limit
deviations of stamping pieces without tolerance indication.
This document applies to metal stamping pieces. Non-metal stamping pieces may refer
to this document.
The limit deviations specified in this document apply to non-fitted dimensions.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 8541, Terminology of forging and stamping
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 8541 as
well as the followings apply.
3.1 blanking size
The linear dimensions of stamping pieces processed by blanking, punching and other
separation processes (see D, d, s1, s2 in Figure 1).
3.2 forming size
The linear dimensions of stamping pieces processed by bending, deep drawing and
other forming processes (see l1, l2, d1, h, h1 in Figure 2 and Figure 3).
3.3 blanking corner radius
The linear dimension of the corner radius of the stamping piece processed by blanking,
punching and other separation processes (see R in Figure 4).
3.4 forming corner radius
The linear dimension of the corner radius of the stamping part processed by bending,
deep drawing and other forming processes (see r, r1, r2, r3 in Figure 2 and Figure 3).
3.5 blanking angle
At the plane of the flat or formed piece, the angular dimension formed by blanking (see
α in Figure 4)
4 Tolerance grades
The limit deviation of blanking size without tolerance indication, forming size without
tolerance indication, blanking corner radius size without tolerance indication, blanking
angle size without tolerance indication and bending angle size without tolerance
indication are divided into f, m, c, v, four descending tolerance grades.
5 Limit deviation of dimensions without tolerance indication
5.1 Limit deviation of blanking size without tolerance indication
The limit deviation of blanking size without tolerance indication shall be specified in Table 1.
5.2 Limit deviation of forming size without tolerance indication
The limit deviation of forming size without tolerance indication shall be specified in Table 2.
5.3 Limit deviation of corner radius size without tolerance indication
5.4 Limit deviation of angular size without tolerance indication
6 Representation method for grades of tolerances without indication
Use the limit deviation of the size without tolerance indication specified in this
document. In the corresponding drawings, technical documents or files, this document's
number and tolerance grade symbol are used. For example, when selecting the level-m
tolerance grade in this document, it is expressed as. GB/T 15055-m.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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