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GB/T 14976-2012 English PDF (GBT14976-2012)

GB/T 14976-2012 English PDF (GBT14976-2012)

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GB/T 14976-2012: Seamless stainless steel pipes for fluid transport

This Standard specifies the classification, code number, order contents, dimension, appearance, weight, technical requirements, test methods, inspection rules, package, marks and quality certificate of seamless stainless steel pipes for fluid transport.
GB/T 14976-2012
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.140.75
H 48
Replacing GB/T 14976-2002
Seamless Stainless Steel Pipes for Fluid
Transport
ISSUED ON. MAY 11, 2012
IMPLEMENTED ON. FEBRUARY 1, 2013
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
1 Scope ... 5
2 Normative References ... 5
3 Classification and Code ... 7
4 Ordering Information ... 7
5 Dimension, Appearance and Weight ... 8
6 Technical Requirements ... 11
7 Test Methods ... 18
8 Inspection Rules ... 19
9 Packaging, Marking and Quality Certificate ... 19
Appendix A (Informative) Designation Comparison Table of Stainless Steel ... 20 Foreword
This Standard was drafted in accordance with the rules specified in GB/T 1.1-2009. This Standard was drafted by making reference to "Seamless and Welded Steel Austenitic Stainless Steel Pipes for General Service" (ASTM A 269/A 269M-04), "Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes" (ASTM A 312/A 312M-05a) and "Seamless and Welded Ferritic and Martensitic Stainless Steel Pipes for General Service" (ASTM A 268/A 268M-05a).
This Standard replaces "Stainless Steel Seamless Tubes for Fluid Transport" (GB/T 14976-2002). The main changes in this Standard, compared with GB/T 14976-2002, are as follows.
?€? A delivery method in accordance with the minimum wall thickness is added; ?€? The permissible dimension deviation of the steel pipes is modified;
?€? The mark examples are deleted;
?€? The designation and chemical composition of steel are modified according to GB/T 20878;
?€? Designations of steel, 07Cr17Ni12Mo2, 07Cr19Ni11Ti, 07Cr18Ni11Nb,
06Cr13Al, 10Cr15, 022Cr18Ti, 019Cr19Mo2NbTi and 12Cr13, are added;
?€? Designation and relevant contents of dual phase steel are deleted.
?€? Requirements for the hydraulic test of steel pipes are modified;
?€? Informative A?€? Designation Comparison Table?€? is added.
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. Jiangsu Wujin Stainless Steel Pipe Group Co., Ltd., Pangang Group Chengdu Iron and Steel Co., Ltd., Shangxi Taigang Stainless Steel Co., Ltd., Shanghai Shangshang Stainless Steel Pipe Co., Ltd., Yongxing Special Stainless Steel Co., Ltd. AND Metallurgical Information and Standardization Institute. Chief drafting staffs of this Standard. Song Jianxin, Zhou Zhibin, Yan Ru, Li Qi, Li Changyi, Ji Xuewen, Yang Hui, Wang Jianyong, Chen Zemin and Dong Li.
The previous editions replaced by this Standard are as follows.
Seamless Stainless Steel Pipes for Fluid Transport
1 Scope
This Standard specifies the classification, code number, order contents, dimension, appearance, weight, technical requirements, test methods, inspection rules, package, marks and quality certificate of seamless stainless steel pipes for fluid transport. This Standard is applicable to the seamless stainless steel pipes for fluid transport (hereinafter referred to as steel pipes).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the dated versions apply to this Standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this Standard.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products GB/T 223.9 Iron, Steel and Alloy - Determination of Aluminum Content - Chrom Azurol S Photometric Method
GB/T 223.11 Iron Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
GB/T 223.16 Methods for Chemical Analysis of Iron, Steel and Alloy - The Chromotropic Acid Photometric Method for the Determination of Titanium 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 223.25 Methods for Chemical Analysis of Iron, Steel and Alloy - The Dimethylglyoxime Gravimetric Method for the Determination of Nickel Content GB/T 223.28 Methods for Chemical Analysis of Iron Steel and Alloy - The D-denzoinoxime Gravimetric Method for the Determination of Molybdenum
Content
GB/T 223.36 Methods for Chemical Analysis of Iron, Steel and Alloy - The Neutral Titration Method for the Determination of Ammonia Content after Distillation Separation
GB/T 223.40 Iron Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S 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 223.68 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 228.1 Metallic Material - Tensile Test - Part 1. Ambient-temperature Test GB/T 241 Metal Materials ?€? Tubes - Hydrostatic Pressure Testing
GB/T 242 Metallic Materials ?€? Tube - Drift Expanding Test
GB/T 246 Metallic Materials ?€? Tube - Flattening Test
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 4334-2008 Corrosion of Metals and Alloys - Test Methods for Intergranular Corrosion of Stainless Steels
GB/T 5777-2008 Seamless Steel Pipe and Tubing Methods for Ultrasonic Testing GB/T 7735-2004 Steel Tubes - The Inspection Method on Eddy Current Test GB/T 11170 Stainless Steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 17395 Dimensions, Shapes, Masses and Tolerances of Seamless Steel
Tubes
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 20124 Steel and Iron - Determination of Nitrogen Content - Thermal Conductimetric Method after Fusion in a Current of Inert Gas
GB/T 20878 Stainless and Heat-resisting Steels - Designation and Chemical Composition
3 Classification and Code
3.1 The steel pipes may be classified into two types according to the product processing method, and the category and code are.
?€? Hot rolled (squeezed and extended) steel pipes W-H;
?€? Cold-drawn (rolled) steel pipes W-C.
3.2 The steel pipes may be divided into two grades according to the dimensional accuracy, and the grade and code are.
?€? Ordinary grade PA;
?€? High grade PC.
3.3 The following codes are applicable to this Standard.
?€? D The outer diameter or nominal outer diameter;
?€? S The wall thickness or nominal wall thickness;
?€? Smin The minimum wall thickness.
4 Ordering Information
The contract or order for purchasing steel pipes according to this Standard shall include, but not limited to the following contents.
a) Standard number;
b) Product name;
c) Steel designation;
d) Dimensions;
e) Ordered quantity (total weight or total length);
f) Condition of delivery;
g) Optional requirements;
h) Other special requirements.
5 Dimension, Appearance and Weight
5.1 Outer diameter and wall thickness
5.1.1 The steel pipes shall be delivered according to nominal outer diameter and nominal wall thickness. As required by the purchaser and based on the agreement of both the supplier and the purchaser, the steel pipes may be delivered according to the nominal outer diameter and the minimum wall thickness or other dimensions. 5.1.2 The outer diameter and wall thickness of steel pipes shall meet the relevant requirements of GB/T 17395. As required by the purchaser and based on the agreement of both the supplier and the purchaser, steel pipes beyond the dimensions specified in GB/T 17395 may be supplied.
5.1.3 Where the steel pipes are delivered according to the nominal outer diameter and nominal wall thickness, the permissible deviation of its nominal outer diameter and nominal wall thickness shall meet those specified in Table 1. Where the steel pipes are del...

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