GB 3087-2008 English PDF

GB 3087-2008: [GB/T 3087-2008] Seamless steel tubes for low and medium pressure boiler
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GB 3087-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB 3087-1999
Seamless Steel Tubes for
Low and Medium Pressure Boiler
(ISO 9329-1.1989, NEQ)
ISSUED ON. OCTOBER 24, 2008
IMPLEMENTED ON. OCTOBER 1, 2009
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 ... 5 
2 Normative References ... 5 
3 Ordering Information ... 8 
4 Dimension, Appearance and Weight ... 8 
5 Technical Requirements ... 11 
6 Test Methods ... 16 
7 Inspection Rules ... 17 
8 Packing, Marking and Quality Certificate ... 18 
Foreword
This standard is corresponding to ISO 9329-1.1989 "Seamless Steel Tubes for
Pressure Purposes - Technical Delivery Conditions - Part 1. Unalloyed Steels with
Specified Room Temperature Properties" (English edition). This standard is not
equivalent to ISO 9329-1.1989.
GB 3087-1999 “Seamless Steel Tubes for Low and Medium Pressure" shall be
abolished, from the implementation data of this standard. And there have been some
significant changes in this standard over GB 3087-1999 in the following aspects.
— The application scope of steel tubes was modified;
— The "ordering information" was added;
— The allowable dimension deviations were modified;
— The requirements on full length flexibility were added;
— The requirements on oblique cutting of end socket were added;
— The marking examples were canceled;
— The smelting process of steel was modified;
— Provisions on the delivery condition of steel tubes were modified;
— Provisions on the specific manufacturing method of hot-extended steel tubes
were added;
— Provisions on the mechanical properties of steel tubes were modified;
— The judgement rules for Point 6 (bottom) and Point 12 (top) of the flattening
test sample of steel tube were added;
— Requirements on flanging test were canceled;
— The requirements on replacing hydraulic test with flaw detection were
modified.
Clauses 4.1, 4.2, 4.3, 4.5, 4.7, 5.1.3, 5.3.1, 5.4.2, 5.5.2 and 5.9 in this standard are
voluntary, and the rest are compulsory.
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.
Seamless Steel Tubes for
Low and Medium Pressure Boiler
1 Scope
This standard specifies the ordering information, dimension, appearance, weigh,
technical requirements, test methods, inspection rules, packing, marking and quality
certificate of the seamless steel tubes for low and medium pressure boilers.
This standard is applicable to the seamless steel tubes that are made of quality
carbon structural steels and used for manufacturing various low and medium pressure
boilers.
2 Normative References
The following standards contain provisions which, through reference in this text,
constitute provisions of this standard. For dated reference, subsequent amendments
to (excluding correction to), or revisions of, any of these publications do not apply.
However, the parties whose enter into agreement according to this standard are
encouraged to research whether the latest editions of these labels are applied or not.
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 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination
of Phosphorus Content
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total
Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.10 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Cupferron Separation-Chrome Azurol S Photometric Method for the Determination
of Aluminium Content
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 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper
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 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Indophenal Blue Photometric Methods for the Determination of Nitrogen Content
after Distillation Separation
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Sodium Arsenite-sodium Nitrite Titrimetric Method for the Determination of
Manganese Content
GB/T 223.59 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Reduced Molybdoantimonyl Phosphoric Acid Photometric Method for the
Determination of Phosphorus Content
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 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Ammonium Phosphomolybdate Volumetric Method for the Determination of
Phosphorus 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 223.74 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Combustion Gravimetric/gas-volumetric Method for the Determination of
Combined Carbon Content
GB/T 226 Etch Test for Macrostructure and Defect of Steels
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T
228-2002, eqv ISO 6892.1998)
GB/T 241 Metal Materials - Tube - Hydrostatic Pressure Test
GB/T 242 Metal Materials - Tube - Drift-expending Test (GB/T 242-2007, ISO
8493.1998, IDT)
GB/T 244 Metallic Materials – Tube - Bend Test (GB/T 244-2008, ISO 8491.1998,
IDT)
GB/T 246 Metal Materials - Tube - Flattening Test (GB/T 246-2007, ISO
8492.1998, IDT)
GB/T 699 Quality Carbon Structural Steels
GB/T 1979 Standard Diagrams for Macrostructure and Defect of 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 2975-1998, eqv ISO 377.1997)
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission
Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 4338 Metallic Materials - Tensile Testing at Elevated Temperature (GB/T
4338-2006, ISO 783.1999, MOD)
GB/T 5777-2008 Seamless Steel Pipe and Tubing Methods for Ultrasonic Testing
(ISO 9303.1989(E), 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 and 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 and ISO 5252.1991,
MOD)
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)
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 20124-2006, ISO 15350.2000, IDT)
GB/T 20124 Steel and Iron - Determination of Nitrogen Content - Thermal
Conductimetric Method after Fusion in a Current of Inert Gas (GB/T 20124-2006,
ISO 15351.1999, IDT)
3 Ordering Information
The contract or order for purchasing steel tubes according to this standard shall
include, but not limited to the following contents.
a) Serial number of standard;
b) Product name;
c) Gr...
GB 3087-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB 3087-1999
Seamless Steel Tubes for
Low and Medium Pressure Boiler
(ISO 9329-1.1989, NEQ)
ISSUED ON. OCTOBER 24, 2008
IMPLEMENTED ON. OCTOBER 1, 2009
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 ... 5 
2 Normative References ... 5 
3 Ordering Information ... 8 
4 Dimension, Appearance and Weight ... 8 
5 Technical Requirements ... 11 
6 Test Methods ... 16 
7 Inspection Rules ... 17 
8 Packing, Marking and Quality Certificate ... 18 
Foreword
This standard is corresponding to ISO 9329-1.1989 "Seamless Steel Tubes for
Pressure Purposes - Technical Delivery Conditions - Part 1. Unalloyed Steels with
Specified Room Temperature Properties" (English edition). This standard is not
equivalent to ISO 9329-1.1989.
GB 3087-1999 “Seamless Steel Tubes for Low and Medium Pressure" shall be
abolished, from the implementation data of this standard. And there have been some
significant changes in this standard over GB 3087-1999 in the following aspects.
— The application scope of steel tubes was modified;
— The "ordering information" was added;
— The allowable dimension deviations were modified;
— The requirements on full length flexibility were added;
— The requirements on oblique cutting of end socket were added;
— The marking examples were canceled;
— The smelting process of steel was modified;
— Provisions on the delivery condition of steel tubes were modified;
— Provisions on the specific manufacturing method of hot-extended steel tubes
were added;
— Provisions on the mechanical properties of steel tubes were modified;
— The judgement rules for Point 6 (bottom) and Point 12 (top) of the flattening
test sample of steel tube were added;
— Requirements on flanging test were canceled;
— The requirements on replacing hydraulic test with flaw detection were
modified.
Clauses 4.1, 4.2, 4.3, 4.5, 4.7, 5.1.3, 5.3.1, 5.4.2, 5.5.2 and 5.9 in this standard are
voluntary, and the rest are compulsory.
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.
Seamless Steel Tubes for
Low and Medium Pressure Boiler
1 Scope
This standard specifies the ordering information, dimension, appearance, weigh,
technical requirements, test methods, inspection rules, packing, marking and quality
certificate of the seamless steel tubes for low and medium pressure boilers.
This standard is applicable to the seamless steel tubes that are made of quality
carbon structural steels and used for manufacturing various low and medium pressure
boilers.
2 Normative References
The following standards contain provisions which, through reference in this text,
constitute provisions of this standard. For dated reference, subsequent amendments
to (excluding correction to), or revisions of, any of these publications do not apply.
However, the parties whose enter into agreement according to this standard are
encouraged to research whether the latest editions of these labels are applied or not.
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 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination
of Phosphorus Content
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total
Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.10 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Cupferron Separation-Chrome Azurol S Photometric Method for the Determination
of Aluminium Content
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 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper
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 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Indophenal Blue Photometric Methods for the Determination of Nitrogen Content
after Distillation Separation
GB/T 223.58 Methods for Chemical Analysis ...