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GB/T 1230-2006 PDF in English


GB/T 1230-2006 (GB/T1230-2006, GBT 1230-2006, GBT1230-2006)
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Standards related to: GB/T 1230-2006

GB/T 1230-2006: PDF in English (GBT 1230-2006)

ICS 21.060.30
J 13
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB/T 1230-1991
High Strength Plain Washers for Steel Structures
(ISO 7416. 1984, Plain washers, chamfered, hardened
and tempered for high strength structural bolting, NEQ)
ISSUED ON. MARCH 27, 2006
IMPLEMENTED ON. NOVEMBER 1, 2006
Jointly issued by. General Administration of Quality Supervision,
Inspection and Quarantine of the People’s Re public of China;
Standardization Administration of the Peopl’s Republic
of China.
GB
1Foreword
This national standard is corresponding to ISO 7416 Plain washers for High-strength
Structural Bolting Hardened and Tempered. Its consistency is not equivalent to ISO
7416.
This standard replaces GB/T 1230-1991 High Strength Plain Washers for Steel
Structures.
As compared with GB/T 1230-1991, the changes in this standard are listed as below.
-The dimension code of plain washers has been changed into “h” (Chapter 3 of GB/T
1230-1991).
This standard is one of Contact Sets of Friction-type High Strength Bolt Hexagon Nut and
Plain Washer for Steel Structures of Chinese Standard Product Series. The standards of
this series also include.
- GB/T 1228-2006 High Strength Bolts with Large Hexagon Head for Steel Structures;
- GB/T 1229-2006 High Strength Large Hexagon Nuts for Steel Structures;
- GB/T 1231-2006 Specifications of High Strength Bolts with Large Hexagon Head,
Large Hexagon Nuts, Plain Washers for Steel Structures;
- GB/T 3632-1995 Type and Dimension for Sets of Torshear Type High Strength Bolt
Hexagon Nut and Plain Washer for Steel Structures;
- GB/T 3633-1995 Technical Requirement for Sets of Torshear Type High Strength Bolt
Hexagon Nut and Plain Washer for Steel Structures.
This national standard was proposed by China Machinery Industry Federation.
This national standard shall be under the jurisdiction of National Technical Committee
85 on Fasteners Standardization Administration of China
This national standard was drafted by China Academy of Railway Sciences, and the
participating organizations of drafting are China Academy of Machinery Science &
Technology, Shanghai High Strength Bolts Plant, Central Research Institute of Building
and Construction, MCC Group, Daye Special Steel Co., Ltd.
This national standard was prepared by Cheng Jiqing and Shen Jiahua.
The previous versions replaced by this standard are as follows.
--GB 1230-1976, GB 1230-1984, GB/T 1230-1991.
2High Strength Plain Washers for Steel Structures
1 Scope
This national standard specifies the style and size, technical condition and tagging of the
high strength plain whose dimensions are 12mm~30mm.
This national standard is applicable to the contact sets of friction-type high strength
bolt hexagon nut and plain washer for steel structures which should be used
together with GB/T 1228-2006 High Strength Bolts with Large Hexagon Head for
Steel Structures.
2 Normative References
The following normative documents contain provision which, through reference in this
text, constitute provisions of this national standard. For dated reference, subsequent
amendments (excluding corrigendum content) to, or revisions of, any of these
publications do not apply. However, it is encouraged for the parties who reach an
agreement using the latest edition of these documents by referring to this standard. For
undated references, the latest edition of the normative document referred to applies.
GB/T 1228 High Strength Bolts with Large Hexagon Head for Steel Structures [GB/T
1228-2006, ISO 7412. 1984, Hexagon bolts for high strength structural
bolting with large width across flats(short thread length) -Product grade
C-Property classes 8.8 and 10.9, NEQ]
GB/T 1231 Specifications of High Strength Bolts with Large Hexagon Head, Large
Hexagon Nuts, Plain Washers for Steel Structures
GB/T 1237 Designation System for Fasteners (GB/T 1237-2000, eqv ISO 8991.1986)
3. Dimension
See Figure 1 and Table 1 for the dimension.
Figure 1
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.