GB 50205-2001 English PDF (GB50205-2001)

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GB 50205-2001: Code for Acceptance of Construction quality of Steel Structures
GB 50205-2001
GB
UDC
National Standard
of the People's Republic of China
Code for Acceptance of Construction Quality of
Steel Structures
ISSUED ON. JANUARY 10, 2002
IMPLEMENTED ON. MARCH 1, 2002
Jointly issued by. Ministry of Construction of the People's Republic of China;
General Administration for Quality Supervision and Inspection and Quarantine
of the People's Republic of China.
Some pages are intentionally removed. Please purchase a full copy from.
National Standard
of the People's Republic of China
Code for Acceptance of Construction Quality of
Steel Structures
Compiled by. Ministry of Construction of the People's Republic of China.
Approved by. Ministry of Construction of the People's Republic of China.
IMPLEMENTED ON. MARCH 1, 2002
Notice on the Issue of the State Standard of the Code of Acceptance of
Construction Quality of Steel Structures
J.B. [2002] NO. 11
According to the requirements of the Notice on the Issue of the Plan of Preparing and
Revising the Construction Standards during 2000 - 2001 (JB [2001] No. 87), the Code of
Acceptance of Construction Quality of Steel Structures was jointly compiled by the
General Architecture Research Institute of Metallurgy Ministry and other related
organizations. It has been reviewed by the related departments and approved to be the
national standard. The number is GB 50205-2001. This Code will be put in force on March
1, 2002. In which, the mandatory clauses include 4.2.1, 4.3.1, 4.4.1, 5.2.2, 5.2.4, 6.3.1,
8.3.1, 10.3.4, 11.3.5, 12.3.4, 14.2.2 and 14.3.3. They must be executed strictly. At the same
time, the previous versions of the Code of Acceptance of Construction Quality of Steel
Structures (GB 50205-95) and the Standard of Inspection and Assesment of Construction
Quality of Steel Structures (GB 50221-95) shall be abolished.
The Construction Ministry shall be responsible for the administration of this Code and the
interpretation of the mandatory clauses in this Code. The General Architecture Research
Institute of Metallurgy Ministry shall be responsible for the interpretation of the specific
technical content. The issue and publication of this Code shall be jointly by the Standard and
Norm Institute of Construction Ministry and the China Planning Publishing House.
The Construction Ministry Ministry of Construction of the People's Republic of China
January 10, 2002
Preface
This Code was compiled by revising the Code of Acceptance of Construction Quality of
Steel Structures (GB 50205-95) and the Standard of Inspection and Assesment of
Construction Quality of Steel Structures (GB 50221-95). It was jointly drafted by the
General Architecture Research Institute of Metallurgy Ministry and other related
organizations, according to the Notice on the Issue of the Plan of Preparing and Revising
the Construction Standards during 2000 - 2001 (JB [2001] No. 87).
During the revision, the team responsible for the compilation have carried out extensive
surveys; summarized the practical experiences on the acceptance of construction quality of
steel structures in China; taken the current version of the state standard of the Uniform
Standard of Acceptance of Construction Quality of Steel Structures (GB 50300) as the basis
and revised it holistically according to the approach of "Separate the test and evaluation;
strengthen the acceptance; enhance the means and process control"; widely solicited the
views and opinions, in various ways, from the relevant organizations of the country; and
modified the main issues repeatedly, so as the approval-version is finalized.
This code is divided into 15 chapters, including General, Terms, Symbols, Basic
Requirements, Admittance of Raw Materials and Finished Products, Welding Work,
Connection Work of Fasteners, Processing Work of Steel Parts and Copper Components,
Assembly Work of Steel Elements, Test Assembling Work of Steel Elements, Installation
Work of Single-layer Steel Elements, Installation Work of Multilayer or High Steel
Elements, Installation Work of Net-type Steel Structures, Preparation and Installation Work
of Metal Contour Plates, Coating Work of Steel Structures, Acceptance of Subitem-works
of Steel Structures, and 9 appendixes. The Work of Steel Structures is divided into 10
subitem-works in principle, which are presented in separate chapters respectively. Though
the Admittance of Raw Materials and Finished Products is not one of the subitem-works, it
is presented in one independent chapter, aiming at emphasizing and enhancing the
importance of the admittance inspection of raw materials and finished products and
therefore ensuring the construction quality by controlling the quality of the source.
Additionally, the Acceptance of Subitem-works of Steel Structures is also presented in an
independent chapter in order to provide further convenience for the operation of the
acceptance of construction quality.
This Code may be revised where necessary in the future. The information about the
revision of any parts of this Code and the revised clauses will be published on the magzine
Standardization of Construction.
This Code’s clauses highlighted in boldface are mandatory.
Main drafting organization, supporting drafting organizations, and chief drafters.
Main drafting organization.
General Architecture Research Institute of Metallurgy Ministry.
Supporting drafting organizations.
Wuhan Steel Structures Co., Ltd;
Beijing General Institute of Iron and Steel Design;
China Jingye Construction Engineering Contract
Yuanda Construction Supervision Company of Beijing City;
Shenzhen Jianshenghe Steel Structure Construction Engineering Co, Ltd of China
Construction Third Bureau;
Mechanical Construction Company of Beijng City;
Zhejiang Hangxiao Steel Structure Co, LTD;
Steel Structure Company of China Construction First Bureau;
Shandong Chucheng High Strength Fasteners Company;
Zhejiang Jinggong Steelbuilding Co., LTD;
Hilfi (China) Ltd.
Chief drafters.
Hou Zhaoxin He Fentao Yu Zhichuo Wang Wentao He Qiaosheng
He Xianjuan Lu Kekuan Liu Jingfeng Shi Jin Pao Guangjian
Cheng Guojing Yi Minda Ma Naiguang Li Haifeng Qian Weijun
Table of Contents
1 General ... 9 
2 Terms and Symbols ... 10 
2.1 Terms ... 10 
2.2 Symbols ... 10 
3 Basic requirements ... 12 
4 Admittance of Raw Materials and Finished Products ... 14 
4.1 Ordinary requirements ... 14 
4.2 Steel materials ... 14 
4.3 Welding materials ... 15 
4.4 Standard fasteners for connecting ... 16 
4.5 Weld balls ... 17 
4.6 Bolt balls ... 17 
4.7 Closing boards, flare heads, sleeves ... 18 
4.8 Metal contour plates ... 18 
4.9 Coating materials ... 19 
4.10 Others ... 20 
5 Welding Work of Steel Structures ... 21 
5.1 Ordinary requirements ... 21 
5.2 Welding work of steel structures ... 21 
5.3 Welding work of welding stud ... 24 
6 Connecting Work of Fasteners ... 26 
6.1 Ordinary requirements ... 26 
6.2 Connecting of ordinary fasteners... 26 
6.3 Connecting of high strength bolts... 27 
7 Processing Work of Steel Parts and Components ... 29 
7.1 Ordinary requirements ... 29 
7.2 Gas cutting ... 29 
7.3 Connecting of high strength bolts... 30 
7.4 Processing of edges ... 31 
7.5 Processing of pipes/ducts and balls ... 32 
7.6 Pr...