Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed according to the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13793-2008 Steel Pipes with a Longitudinal Electric (Resistance) Weld and has the following main changes with respect to GB/T 13793-2008:
——The application scope is modified;
——The permissible variation in dimension is modified;
——The permissible variations in specified length and multiple length are modified;
——The mass conversion coefficient of galvanized steel pipes is modified;
——Designations Q275, Q390, Q420, Q460 are added; designation Q295 and its technical requirements are deleted;
——Cold/hot working methods after welding are deleted from the manufacturing methods;
——The mechanical property requirements of Q195 are modified;
——Sampling method and sampling position of tensile test are added;
——The requirements for transverse tensile test of weld are modified;
——The requirements for non-destructive testing of steel pipe weld are modified;
——The requirements for the mass of galvanized coating are modified;
——The conversion formula coefficient of unit mass and thickness of galvanized coating are modified.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the China Steel Standardization Technical Committee (SAC/TC 183).
The previous editions of this standard are as follows:
GB/T 13792-1992, GB/T 13793-1992, GB/T 13793-2008.
Steel Pipes with a Longitudinal Electric (Resistance) Weld
1 Scope
This standard specifies the classification, code, order details, dimension, shape, mass, permissible variation, technical requirements, test methods, inspection rules, marking, packing and quality certification of steel pipes with a longitudinal electric (resistance) weld.
This standard is applicable to steel pipes (not greater than 711mm in outer diameter) with a longitudinal electric (resistance) weld used in machinery and building structures and may also be applicable to the welded steel pipes for general fluid transportation.
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 referenced document (include any amendments) applies.
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 Silicomolybdicate Spectrophotometric Method
GB/T 223.9 Iron Steel and Alloy - Determination of Aluminium 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 223.12 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 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-Benzoyl-N-Phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content
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 223.19 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 Methods for Chemical Analysis of Iron, Steel and Alloy - The Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel Content
GB/T 223.32 Methods for Chemical Analysis of Iron, Steel and Alloy - The Hypophosphite Reduction-iodimetric Method for the Determination of Arsenic Content
GB/T 223.37 Methods for Chemical Analysis of Iron Steel And Alloy - The Indophenol Blue Photometric Methods for the Determination of Nitrogen Content after Distillation Separation
GB/T 223.40 Iron Steel and Alloy - Determination of Niobium Content by the Sulfochlorophenol S 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 Copper 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 223.58 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 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 223.61 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 Alloyed - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method
GB/T 223.67 Iron Steel and Alloy - Determination of Sulfur Content -Methylene Blue Spectrophotometric 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 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 241 Metal Materials - Tube - Hydrostatic Pressure Test
GB/T 242 Metal Materials - Tube – Drift-expanding Test
GB/T 244 Metal Materials - Tube - Bend Test
GB/T 246 Metal Materials - Tube - Flattening Test
GB/T 699-2015 Quality Carbon Structure Steels
GB/T 700-2006 Carbon Structural Steels
GB/T 1591-2008 High Strength Low Alloy Structural Steels
GB/T 2102 Acceptance, Packing, Marking and Quality Certification of Steel Pipe
GB/T 2650 Impact Test Methods on Welded Joints
GB/T 2651 Tensile Test Method on Welded Joints
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4336 Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 7735-2004 Steel Tubes - The Inspection Method on Eddy Current Test
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
GB/T 21835 Dimensions and Masses Per Unit Length of Welded Steel Pipes
SY/T 6423.2-2013 Petroleum and Natural Gas Industries - Non-destructive Testing (NDT) Methods of Steel Tubes - Part 2: Automated Ultrasonic Testing of the Weld Seam of Welded Steel Tubes for the Detection of Longitudinal and/or Transverse Imperfections
3 Classification and Code
3.1 By the precision grade of outer diameter, steel pipes are divided into:
a) General precision PD.A;
b) Relatively high precision PD. B;
c) High precision PD. C.
3.2 By the precision grade of wall thickness, steel pipes are divided into:
a) General precision PT.A
b) Relatively high precision PT.B
c) High precision PT.C
3.3 By the precision grade of bending, steel pipes are divided into:
a) General precision PS. A;
b) Relatively high precision PS. B;
c) High precision PS. C.
4 Order Details
4.1 General requirements
Contracts or orders for steel pipes based on this standard shall be included:
a) The number of this standard;
b) Product name;
c) Steel designation (quality grade);
d) Ordered quantity (total mass or total length);
e) Manufacturing method;
f) Dimensional specification;
g) Delivery state;
h) Usage.
4.2 Special requirements
As indicated in the contract based on the agreement between the supplier and the purchaser, the purchaser may select the following requirements:
a) Hydrostatic pressure test;
b) Manufacturing precision;
c) Pipe end state;
d) Remove the inner burrs;
e) Mass of galvanized coating;
f) Other requirements.
5 Dimension, Shape, Mass and Permissible Variation
5.1 Outer diameter and wall thickness
5.1.1 The nominal outer diameter (D) and wall thickness (t) of steel pipes shall meet the requirements of GB/T 21835. As required by the purchaser and based on the agreement between the supplier and the purchaser, steel pipes of other sizes (beyond those specified in GB/T 21835) may be supplied.
5.1.2 The permissible variation in outer diameter and wall thickness of steel pipes shall be in accordance with those specified in Table 1 and Table 2 respectively. When the permissible variation level in dimension of steel pipes is not specified in the contract, steel pipes for roller of belt conveyor shall be delivered by relatively high precision as for the permissible variation in outer diameter and wall thickness, other steel pipes shall be delivered by general precision as for permissible variation of outer diameter and wall thickness.
As required by the purchaser and indicated in the contract based on the agreement between the supplier and the purchaser, the steel pipes with permissible variation in dimension beyond those specified in Table 1 and Table 2 may be supplied.
Foreword i
1 Scope
2 Normative References
3 Classification and Code
4 Order Details
5 Dimension, Shape, Mass and Permissible Variation
6 Technical Requirements
7 Test Methods
8 Inspection Rules
9 Marking, Packing and Quality Certification
Annex A (Normative) Uniformity Test of Galvanized Coating - Copper Sulfate Immersion Method
Annex B (Normative) Unit Mass Determination of Galvanized Coating - Antimony Chloride Method
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed according to the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13793-2008 Steel Pipes with a Longitudinal Electric (Resistance) Weld and has the following main changes with respect to GB/T 13793-2008:
——The application scope is modified;
——The permissible variation in dimension is modified;
——The permissible variations in specified length and multiple length are modified;
——The mass conversion coefficient of galvanized steel pipes is modified;
——Designations Q275, Q390, Q420, Q460 are added; designation Q295 and its technical requirements are deleted;
——Cold/hot working methods after welding are deleted from the manufacturing methods;
——The mechanical property requirements of Q195 are modified;
——Sampling method and sampling position of tensile test are added;
——The requirements for transverse tensile test of weld are modified;
——The requirements for non-destructive testing of steel pipe weld are modified;
——The requirements for the mass of galvanized coating are modified;
——The conversion formula coefficient of unit mass and thickness of galvanized coating are modified.
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the China Steel Standardization Technical Committee (SAC/TC 183).
The previous editions of this standard are as follows:
GB/T 13792-1992, GB/T 13793-1992, GB/T 13793-2008.
Steel Pipes with a Longitudinal Electric (Resistance) Weld
1 Scope
This standard specifies the classification, code, order details, dimension, shape, mass, permissible variation, technical requirements, test methods, inspection rules, marking, packing and quality certification of steel pipes with a longitudinal electric (resistance) weld.
This standard is applicable to steel pipes (not greater than 711mm in outer diameter) with a longitudinal electric (resistance) weld used in machinery and building structures and may also be applicable to the welded steel pipes for general fluid transportation.
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 referenced document (include any amendments) applies.
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 Silicomolybdicate Spectrophotometric Method
GB/T 223.9 Iron Steel and Alloy - Determination of Aluminium 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 223.12 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 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-Benzoyl-N-Phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content
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 223.19 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 Methods for Chemical Analysis of Iron, Steel and Alloy - The Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel Content
GB/T 223.32 Methods for Chemical Analysis of Iron, Steel and Alloy - The Hypophosphite Reduction-iodimetric Method for the Determination of Arsenic Content
GB/T 223.37 Methods for Chemical Analysis of Iron Steel And Alloy - The Indophenol Blue Photometric Methods for the Determination of Nitrogen Content after Distillation Separation
GB/T 223.40 Iron Steel and Alloy - Determination of Niobium Content by the Sulfochlorophenol S 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 Copper 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 223.58 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 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 223.61 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 Alloyed - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method
GB/T 223.67 Iron Steel and Alloy - Determination of Sulfur Content -Methylene Blue Spectrophotometric 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 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 241 Metal Materials - Tube - Hydrostatic Pressure Test
GB/T 242 Metal Materials - Tube – Drift-expanding Test
GB/T 244 Metal Materials - Tube - Bend Test
GB/T 246 Metal Materials - Tube - Flattening Test
GB/T 699-2015 Quality Carbon Structure Steels
GB/T 700-2006 Carbon Structural Steels
GB/T 1591-2008 High Strength Low Alloy Structural Steels
GB/T 2102 Acceptance, Packing, Marking and Quality Certification of Steel Pipe
GB/T 2650 Impact Test Methods on Welded Joints
GB/T 2651 Tensile Test Method on Welded Joints
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4336 Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 7735-2004 Steel Tubes - The Inspection Method on Eddy Current Test
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
GB/T 21835 Dimensions and Masses Per Unit Length of Welded Steel Pipes
SY/T 6423.2-2013 Petroleum and Natural Gas Industries - Non-destructive Testing (NDT) Methods of Steel Tubes - Part 2: Automated Ultrasonic Testing of the Weld Seam of Welded Steel Tubes for the Detection of Longitudinal and/or Transverse Imperfections
3 Classification and Code
3.1 By the precision grade of outer diameter, steel pipes are divided into:
a) General precision PD.A;
b) Relatively high precision PD. B;
c) High precision PD. C.
3.2 By the precision grade of wall thickness, steel pipes are divided into:
a) General precision PT.A
b) Relatively high precision PT.B
c) High precision PT.C
3.3 By the precision grade of bending, steel pipes are divided into:
a) General precision PS. A;
b) Relatively high precision PS. B;
c) High precision PS. C.
4 Order Details
4.1 General requirements
Contracts or orders for steel pipes based on this standard shall be included:
a) The number of this standard;
b) Product name;
c) Steel designation (quality grade);
d) Ordered quantity (total mass or total length);
e) Manufacturing method;
f) Dimensional specification;
g) Delivery state;
h) Usage.
4.2 Special requirements
As indicated in the contract based on the agreement between the supplier and the purchaser, the purchaser may select the following requirements:
a) Hydrostatic pressure test;
b) Manufacturing precision;
c) Pipe end state;
d) Remove the inner burrs;
e) Mass of galvanized coating;
f) Other requirements.
5 Dimension, Shape, Mass and Permissible Variation
5.1 Outer diameter and wall thickness
5.1.1 The nominal outer diameter (D) and wall thickness (t) of steel pipes shall meet the requirements of GB/T 21835. As required by the purchaser and based on the agreement between the supplier and the purchaser, steel pipes of other sizes (beyond those specified in GB/T 21835) may be supplied.
5.1.2 The permissible variation in outer diameter and wall thickness of steel pipes shall be in accordance with those specified in Table 1 and Table 2 respectively. When the permissible variation level in dimension of steel pipes is not specified in the contract, steel pipes for roller of belt conveyor shall be delivered by relatively high precision as for the permissible variation in outer diameter and wall thickness, other steel pipes shall be delivered by general precision as for permissible variation of outer diameter and wall thickness.
As required by the purchaser and indicated in the contract based on the agreement between the supplier and the purchaser, the steel pipes with permissible variation in dimension beyond those specified in Table 1 and Table 2 may be supplied.
Contents of GB/T 13793-2016
Foreword i
1 Scope
2 Normative References
3 Classification and Code
4 Order Details
5 Dimension, Shape, Mass and Permissible Variation
6 Technical Requirements
7 Test Methods
8 Inspection Rules
9 Marking, Packing and Quality Certification
Annex A (Normative) Uniformity Test of Galvanized Coating - Copper Sulfate Immersion Method
Annex B (Normative) Unit Mass Determination of Galvanized Coating - Antimony Chloride Method
