GB/T 905-1994 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 905-1994 | English | 70 |
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Dimension, shape, weight and tolerance for cold-drawn round, square and hexagonal steels
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| GB 905-1982 | English | 199 |
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Dimension, shape, weight and tolerance for cold-drawn round steels
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GB/T 905-1994: Dimension, shape, weight and tolerance for cold-drawn round, square and hexagonal steels
---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/GBT905-1994
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
GB/T 905-94
Replacing GB/T 905-82
GB/T 906-82
GB/T 907-82
Dimension, Shape, Weight and Tolerance for Cold-
Drawn Round, Square and Hexagonal Steels
APPROVED ON. DECEMBER 22, 1994
Implemented on. OCTOBER 01, 1995
Approved by. State Bureau of Technical Supervision
Table of Contents
1 Subject Contents and Applicable Scope... 3
2 Sectional Diagram and Marking Symbols of Steel... 3
3 Dimension, Weight and Tolerance... 4
4 Shape... 8
5 Marking Example... 9
Additional Information... 10
Dimension, Shape, Weight and Tolerance for Cold-
Drawn Round, Square and Hexagonal Steels
The dimensional tolerance in this Standard are based on the values in the international
standard ISO 286.1-1998 ISO System of Limits and Fits – Part 1.Bases of Tolerances,
Deviation and Fits; and are consistent with the provisions of GB 1800 Tolerances and
Fits.
1 Subject Contents and Applicable Scope
This Standard specifies the dimension, shape, weight and tolerance of cold-drawn
round, square and hexagonal steels.
This Standard is applicable to the cold-drawn round, square and hexagonal steels with
dimension of 3~80mm.
2 Sectional Diagram and Marking Symbols of Steel
2.1 The sectional diagram and marking symbols of round steel is as shown in Figure
1.
2.2 The sectional diagram and marking symbols of square steel is as shown in Figure
2.
3 Dimension, Weight and Tolerance
3.1 The dimension, sectional area and theoretical weight of steel are listed in Table 1.
3.2 Through the negotiation between the supplier and the purchaser, the steel with
medium dimension can be supplied.
3.3 Steel dimensional tolerance
3.3.1 The steel dimensional tolerance shall conform to the provisions of Table 2; its
level shall be indicated in the contract.
3.4 Length and Tolerance of steel
3.4.1 Normal length
3.4.1.1 The normal length of the steel is 2000~6000mm. The steel with length no less
than 1500mm is allowed to be delivered; its weight shall not exceed 10% total weigh
of such batch;
3.4.1.2 Through the negotiation between the supplier and the purchaser, the steel with
length greater than 6000mm can be supplied.
3.4.2 Specified and multiple length
3.4.2.1 The steel delivered by the specified and multiple length, and indicated in the
contract, its length tolerance shall be no greater than +50 0 mm
4 Shape
4.1 The steel is delivered in straight bars.
4.2 Through the negotiation between the supplier and the purchaser, steel can be
delivered in discs; the disc diameter and weight shall be agreed upon by the two parties.
4.4 Steel shall be free of significant torsion; while the square steel shall be free of
significant out-of-squareness.
4.5 When there are special requirements for the radius of top corner and diagonal lines
on the square steel and hexagonal steel, it shall be negotiated by the supplier and the
Round steel Square steel Hexagonal steel Sectional shape
4.6 The end of the steel shall not have a bend and the shearing deformation that may
affect the use.
4.7 Curvature
5 Marking Example
The markings of cold-drawn steels made of 40Cr steel, with dimension tolerance of
Level-11, the diameter, side length and opposite side distance of 20mm shall be as
follows.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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