GB/T 5312-2009 English PDF (GB/T5312-2009)

GB/T 5312-2009: Carbon and carbon-manganese steel seamless steel tubes and pipes for ship
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GB/T 5312-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB/T 5312-1999
Carbon and Carbon-manganese Steel Seamless
Steel Tubes and Pipes for Ship
ISSUED ON. OCTOBER 30, 2009
IMPLEMENTED ON. MAY 1, 2010
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
1 Scope ... 4 
2 Normative References ... 4 
3 Classification and Code Number ... 6 
4 Ordering Information ... 7 
5 Dimension, Shape, Weight and Allowable Deviation ... 7 
6 Technical Requirements ... 9 
7 Inspection and Testing Methods ... 13 
8 Inspection Rules ... 15 
9 Packing, Marking and Quality Certificate ... 15 
Appendix A (Informative) Mechanical Properties under High Temperature of
Carbon and Carbon-manganese Steel Seamless Steel Tubes and Pipes for Ship
... 16 
Foreword
This standard was revised by referring to the technical contents of seamless steel
tubes and pipes in "Rules for Material and Welding" (2006 edition) issued by the
China Classification Society (CCS).
This standard replaces GB/T 5312-1999 "Carbon and Carbon-manganese Steel
Seamless Steel Tubes and Pipes for Ship". There have been some significant
changes in this standard over GB/T 5312-1999 as follows.
- The ordering information was added;
- The marking samples were deleted;
- The external diameter allowable deviation of hot rolled (extruded) steel tubes and
pipes were modified;
- The allowable length deviation levels were added;
- The index for the straightness in full length was added;
- The content of sulfur and phosphorus was modified;
- The smelting process of steel was modified;
- The methods of bending test were modified;
- The Appendix A and B of original standard were cancelled.
Appendix A of this standard is informative.
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.
Drafting organization of this standard. Baoshan Iron and Steel Co., Ltd.
Participating drafting organizations of this standard. Panggang Group Chengdu Steel
and Iron Co., Ltd. and Jiangyin Jieda Shaped Tube Co., Ltd.
Chief drafting staffs of this standard. Luo Yuqing, Zhang Yaofei, Liu Cailing, Li Qi, Xue
Jianliang and Yang Fan.
The previous editions replaced by this standard are as follows.
- GB/T 5312-1985, GB/T 5312-1999.
Carbon and Carbon-manganese Steel Seamless
Steel Tubes and Pipes for Ship
1 Scope
This standard specifies the classification, code number, dimension, shape, weight,
technical requirements, testing method, inspection rules, packing, marking and quality
certificate of carbon and carbon-manganese steel seamless steel tubes and pipes for
ship (hereinafter referred to as steel tubes and pipes).
This standard is applicable to the carbon and carbon-manganese steel seamless
steel tubes and pipes used for Grade I and I pressure piping system, boilers and
super-heaters for manufacturing ships.
2 Normative References
The following standards contain the provisions which, through reference in this text,
constitute the provisions of this standard. For dated reference, the subsequent
modification or revisions of these publications do not apply. However, all parties who
reach an agreement according to this standard are encouraged to study whether the
latest edition of these documents is applicable. For undated references, the latest
edition of the normative document is applicable to this standard.
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 223.5-2008,
ISO 4829-1.1986, ISO 4829-2.1988, MOD)
GB/T 223.12 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 223.26 Iron Steel and Alloy-Determination of Molybdenum Content-The
Thiocyanate Spectrophotometric Method
GB/T 223.53 Methods for Chemical Analysis of Iron - Steel and Alloy -The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Nickel
Content
GB/T 223.54 Methods for Chemical Analysis of Iron - Steel and Alloy--The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Nickel
Content (GB/T 223.54-1987, eqv ISO/DIS 4940.1986)
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 223.63 Methods for Chemical Analysis of Iron - Steel and Alloy; The Sodium
(Potassium) Periodate Photometric Method for the Determination of Manganese
Content
GB/T 223.68 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 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T
228-2002, eqv ISO 6892.1998)
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (GB/T
229-2007, ISO 148-1.2006, MOD)
GB/T 232 Metallic Materials - Bend Test (GB/T 232-1999, eqv ISO 7438.1985)
GB/T 241 Metal Materials-Tube - Hydrostatic Pressure Test
GB/T 242 Metallic Materials - Tube-Drift Expanding Test (GB/T 242-2007, ISO
8493.1998, IDT)
GB/T 245 Metallic Materials – Tube - Flanging Test (GB/T 245-2008, ISO 8494.1998,
IDT)
GB/T 246 Metallic Materials – Tube - Flattening Test (GB/T 246-2007, ISO
8492.1998, IDT)
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 2975-1998, eqv ISO 377.1997)
GB/T 4336 Method for Photoelectric Emission Spectroscopic Analysis of Carbon
Steel and Medium and Low Alloy Steel
GB/T 4338 Metallic materials - Tensile Testing at Elevated Temperature (GB/T
4338-2006, ISO 783.1989, MOD)
GB/T 5777 Seamless Steel Pipe and Tubing Methods for Ultrasonic Testing (GB/T
5777-2008, ISO 9303.1989, MOD)
GB/T 7735 Steel Tubes - The Inspection Method on Eddy Current Test (GB/T
7735-2004, ISO 9304.1989, MOD)
GB/T 12606 Steel Tubes - the Testing Method of Magnetic Flux Leakage (GB/T
12606-1999, eqv ISO 9402.1989, ISO 9598.1989)
GB/T 17395 Dimensions, Shapes, Masses and Tolerances of Seamless Steel Tubes
(GB/T 17395-2008, ISO 1127.1992, ISO 4200.1991, ISO 5252.1991, NEQ)
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the
Determination of Chemical Composition (GB/T 20066-2006, ISO 14284.1996, IDT)
3 Classification and Code Number
3.1 Steel tubes and pipes are classified into two categories according to the
manufacturing methods. The categories and code numbers are as follows.
a) Hot rolled WHR (extruded WHEX, hot expanded WHE) steel tubes and pipes;
b) Cold drawn WCD (cold rolled WCR) steel tubes and pipes.
3.2 Steel tubes and pipes are classified into seamless steel tubes and pipes used for
pressure piping system AND seamless steel tubes and pipes used for boilers and
super-heaters, according to the functions.
3.2.1 Seamless steel tubes and pipes used for pressure piping system are classified
into three grads according to the design pressure and temperature as shown in
Table1.
Table 1 Piping System Grade
Grade I II III
Medium
Design
pressure /
MPa
Design
temperature /
°C
Design
pressure /
MPa
Design
temperature /
°C
Design
pressure /
MPa
Design
temperature /
°C
Greater than - Not greater than
Steam and
hot oil 1.6 300 0.7~1.6 170~300 0.7 170
Fuel oil 1.6 150 0.7~1.6 60~150 0.7 60
Other
medium 4.0 300 1.6~4.0 200~300 1.6 200
Note 1. where either design pressure or design temperature of the piping system reach the requirements of Grade I,
the tube and pipe will be rated as Grade I; where both the design pressure and design temperature of the
Both end faces of steel tubes and pipes shall be vertical to the tube and pipe axes and
notch burrs shall be cleaned away.
5.5 Out-of-roundness and wall unevenness
As required by the purchaser and indicated in the contract, the out-of-roundness and
wall unevenness of steel tubes and pipes on the same section shall not exceed 80%
of the outer diameter tolerance and wall thickness tolerance respectively.
5.6 Delivered weight
Steel tubes and pipes may be delivered according to actual weight or theoretical
weight. The theoretical weight per meter shall be in accordance with the requirements
of GB/T 17395 (the steel density is 7.85 kg/dm3).
As required by the purchaser, the devia...
GB/T 5312-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB/T 5312-1999
Carbon and Carbon-manganese Steel Seamless
Steel Tubes and Pipes for Ship
ISSUED ON. OCTOBER 30, 2009
IMPLEMENTED ON. MAY 1, 2010
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
1 Scope ... 4 
2 Normative References ... 4 
3 Classification and Code Number ... 6 
4 Ordering Information ... 7 
5 Dimension, Shape, Weight and Allowable Deviation ... 7 
6 Technical Requirements ... 9 
7 Inspection and Testing Methods ... 13 
8 Inspection Rules ... 15 
9 Packing, Marking and Quality Certificate ... 15 
Appendix A (Informative) Mechanical Properties under High Temperature of
Carbon and Carbon-manganese Steel Seamless Steel Tubes and Pipes for Ship
... 16 
Foreword
This standard was revised by referring to the technical contents of seamless steel
tubes and pipes in "Rules for Material and Welding" (2006 edition) issued by the
China Classification Society (CCS).
This standard replaces GB/T 5312-1999 "Carbon and Carbon-manganese Steel
Seamless Steel Tubes and Pipes for Ship". There have been some significant
changes in this standard over GB/T 5312-1999 as follows.
- The ordering information was added;
- The marking samples were deleted;
- The external diameter allowable deviation of hot rolled (extruded) steel tubes and
pipes were modified;
- The allowable length deviation levels were added;
- The index for the straightness in full length was added;
- The content of sulfur and phosphorus was modified;
- The smelting process of steel was modified;
- The methods of bending test were modified;
- The Appendix A and B of original standard were cancelled.
Appendix A of this standard is informative.
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.
Drafting organization of this standard. Baoshan Iron and Steel Co., Ltd.
Participating drafting organizations of this standard. Panggang Group Chengdu Steel
and Iron Co., Ltd. and Jiangyin Jieda Shaped Tube Co., Ltd.
Chief drafting staffs of this standard. Luo Yuqing, Zhang Yaofei, Liu Cailing, Li Qi, Xue
Jianliang and Yang Fan.
The previous editions replaced by this standard are as follows.
- GB/T 5312-1985, GB/T 5312-1999.
Carbon and Carbon-manganese Steel Seamless
Steel Tubes and Pipes for Ship
1 Scope
This standard specifies the classification, code number, dimension, shape, weight,
technical requirements, testing method, inspection rules, packing, marking and quality
certificate of carbon and carbon-manganese steel seamless steel tubes and pipes for
ship (hereinafter referred to as steel tubes and pipes).
This standard is applicable to the carbon and carbon-manganese steel seamless
steel tubes and pipes used for Grade I and I pressure piping system, boilers and
super-heaters for manufacturing ships.
2 Normative References
The following standards contain the provisions which, through reference in this text,
constitute the provisions of this standard. For dated reference, the subsequent
modification or revisions of these publications do not apply. However, all parties who
reach an agreement according to this standard are encouraged to study whether the
latest edition of these documents is applicable. For undated references, the latest
edition of the normative document is applicable to this standard.
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 223.5-2008,
ISO 4829-1.1986, ISO 4829-2.1988, MOD)
GB/T 223.12 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 223.26 Iron Steel and Alloy-Determination of Molybdenum Content-The
Thiocyanate Spectrophotometric Method
GB/T 223.53 Methods for Chemical Analysis of Iron - Steel and Alloy -The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Nickel
Content
GB/T 223.54 Methods for Chemical Analysis of Iron - Steel and Alloy--The Flame
Atomic Absorption Spectrophotometric Method for the Determination of Nickel
Content (GB/T 223.54-1987, eqv ISO/DIS 4940.1986)
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 223.63 Methods for Chemical Analysis of Iron - Steel and Alloy; The Sodium
(Pot...