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GB/T 3094-2012 PDF in English


GB/T 3094-2012 (GB/T3094-2012, GBT 3094-2012, GBT3094-2012)
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GB/T 3094-2012: PDF in English (GBT 3094-2012)

GB/T 3094-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H48
Replacing GB/T 3094-2000
Cold Drawn Shaped Steel Tubes
ISSUED ON. MAY 11, 2012
IMPLEMENTED ON. FEBRUARY 1, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Classification and Designation ... 6 
4 Ordering Information ... 6 
5 Shape, Dimension and Weight ... 7 
6 Technical Requirements ... 9 
7 Test Methods ... 12 
8 Inspection Rules ... 13 
9 Packaging, Marking and Quality Certificate ... 13 
Appendix A (Normative) Shape and Dimension of Steel Tube ... 14 
Appendix B (Normative) Determination Method for Twist Value of Shaped Steel
Tube ... 32 
Foreword
This Standard is drafted according to the rules given in GB/T 1.1-2009.
This Standard is revised by reference to ASTM A 500-07 "Standard Specification for
Cold-formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and
Shapes".
This Standard replace GB/T 3094-2000 "Cold Drawn Shaped Steel Tubes" (GB/T
3094-2000). Compared with GB/T 3094-2000, the main changes of this Standard are
as follows.
- Quality grades of steel designations Q215, Q235, Q345 and Q390 are added;
Q295 is deleted;
- Ordering information is added;
- Curvature and twist value requirements are modified;
- Marking example is deleted;
- General length is modified;
- Mechanical performance of steel tube is modified;
- Requirements for impact test of steel tube are added;
- Size and dimension of steel tube in Appendix A are modified.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of the National Technical Committee on
Iron and Steel of Standardization Administration of China (SAC/TC 183).
Drafting organizations of this Standard. Shanghai Shaped Steel Tube Co., Ltd. AND
Jiangsu Jieda Specific New Material Co., Ltd.
Chief drafting staffs of this Standard. Gao Zhijian, Chen Hongqi, Zhu Sujian, Xue
Jianliang, Wang Wei, Hu Hongwei, Yang Wenyi and Lei Liangliang.
The previous editions replaced by this Standard are as follows.
- GB 3094-1982;
- GB/T 3094-2000.
Cold Drawn Shaped Steel Tubes
1 Scope
This Standard specifies the classification, designation, ordering information, shape,
dimension, technical requirements, test method, inspection rule, packaging, marking
and quality certificate of cold drawn shaped steel tubes.
This Standard is applicable to cold-drawn simple-section shaped tube (hereinafter
referred to as steel tube).
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 normative document (including any amendments)
applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total
Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.9 Iron, Steel and Alloy - Determination of Aluminum Content - Chrom
Azurol S Photometric Method
GB/T 223.12 GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy
- The Sodium Carbonate Separation - Diphenyl Carbazide Photometric Method for
the Determination of Chromium Content
GB/T 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The
N-benzoy-N-phenylhydroxylamine Extraction Photometric Method for the
Determination of Vanadium Content
GB/T 223.17 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Diantipyrylmethane Photometric Method for the Determination of Titanium Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Neocuproine - Chloroform Extraction Photometric Method for the Determination of
Copper Content
GB/T 223.23 Iron Steel and Alloy - Determination of Nickel Content - The
Dimethylglyoxime Spectrophotometric Method
GB/T 223.40 Iron Steel and Alloy - Determination of Niobium Content by the
Sulphochlorophenol S Spectrophotometric Method
GB/T 223.59 Iron Steel and Alloy - Determination of Phosphorus Content -
Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony
Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon
Content
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl
Acetate Extraction Photometric Method for the Determination of Phosphorus
Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Sodium (Potassium) Periodate Photometric Method for the Determination of
Manganese Content
GB/T 223.64 Iron Steel and Alloy - Determination of Manganese Content - Flame
Atomic Absorption Spectrometric Method
GB/T 223.68 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Potassium Iodate Titration Method after Combustion in the Pipe Furnace for the
Determination of Sulfur Content
GB/T 223.69 Iron Steel and Alloy - Determination of Carbon Contents -
Gas-volumetric Method after Combustion in the Pipe Furnace
GB/T 223.71 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Gravimetric Method after Combustion in the Pipe Furnace for the Determination of
Carbon Content
GB/T 223.72 Iron Steel and Alloy - Determination of Sulfur Content - Gravimetric
Method
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1. Method of Test at Room
Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 699 Quality Carbon Structural Steels
GB/T 700 Carbon Structural Steels
GB/T 1591 High Strength Low Alloy Structural Steels
GB/T 2102 Acceptance, Packing, Marking and Certification of Pipe
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for
Mechanical Testing
GB/T 3077 Alloy Structure Steels
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the
Determination of Chemical Composition
GB/T 20123 Steel and Iron - Determination of Total Carbon and Sulfur Content
Infrared Absorption Method after Combustion in an Induction Furnace (Routine
Method)
GB/T 20125 Low-alloy Steel - Determination of Multi-element Contents -
Inductively Coupled Plasma Atomic Emission Spectrometric Method
3 Classification and Designation
Classification and designation of steel tubes according to section shape are as
follows.
a) Square steel tube D-1;
b) Rectangle steel tube D-2;
c) Elliptical steel tube D-3;
d) Flat oval steel tube D-4;
e) Inside and outside hexagonal steel tube D-5;
f) Rectangular trapezoid steel tube D-6.
4 Ordering Information
The contract or order for ordering steel tubes according to this Standard shall include
but not limited to the following contents.
a) Standard No.;
b) Product name;
c) Designation and quality grade of steel (if applicable);
d) Size and dimension;
e) Ordering quantity (total weight or total length);
f) Delivery state;
g) Special requirements.
5 Shape, Dimension and Weight
5.1 Shape and dimension
The shape and dimension of steel tube shall respectively meet the requirements of
Figures A.1~A.6 and Tables A.1~A.6 in Appendix A. As negotiated by the supplier and
the purchaser, steel tube with shape and/or size beyond those specified in Figures
A.1~A.6 and Tables A.1~A.6 in Appendix A may be supplied.
5.2 Permissible deviations in dimensions
The permissible dimension deviation of steel tube shall meet those specified in Table
1.
When the permissible dimension deviation grade is not indicated in the contract by the
purchaser, the permissible dimension deviation of steel tube shall meet the
requirements of ordinary grade dimensional precision. High grade dimensional
precision, when required by the purchaser, shall be indicated in the contract.
As required by the purchaser, steel tube with permissible dimension deviation beyond
those specified in Table 1 may be supplied upon negotiation between the supplier and
the purchaser.
Table 1 Permissible Dimension Deviation of Steel Tube In mm
Dimension
Permissible deviation
Ordinary grade High grade
Side lengths
A and B
≤30 ±0.30 ±0.20
>30~50 ±0.40 ±0.30
>50~75 ±0.80%A and ±0.80%B ±0.7%A and ±0.7%B
>75 ±1%A and ±1%B ±0.8%A and ±0.8%B
Wall thickness
≤1.0 ±0.18 ±0.12
>1.0~3.0 +15%S -10%S
+12.5%S
-10%S
>3.0 +12.5%S -10%S ±10%S
5.3 Side u...
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.