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Position: Chinese Standard in English/GB/T 24593-2018
GB/T 24593-2018   Welded austenitic stainless steel tubes for boiler and heat exchanger (English Version)
Standard No.: GB/T 24593-2018 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 7500 words Price(USD):140.0 remind me the price change

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Implemented on:2019-3-1 Delivery: via email in 1 business day
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Standard No.: GB/T 24593-2018
English Name: Welded austenitic stainless steel tubes for boiler and heat exchanger
Chinese Name: 锅炉和热交换器用奥氏体不锈钢焊接钢管
Chinese Classification: H48    Steel tube and cast iron pipe
Professional Classification: GB    National Standard
ICS Classification: 77.140.75 77.140.75    Steel pipes and tubes for specific use 77.140.75
Issued by: SAMR and SAC
Issued on: 2018-06-07
Implemented on: 2019-3-1
Status: valid
Superseding:GB/T 24593-2009 Welded austenitic stainless steel tubes for boiler and heat-exchanger
Language: English
File Format: PDF
Word Count: 7500 words
Price(USD): 140.0
Delivery: via email in 1 business day
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 drafted in accordance with the rules given in the GB/T 1.1-2009. This standard replaces GB/T 24593-2009 Welded Austenitic Stainless Steel Tubes for Boiler and Heat-exchanger. The following technical deviations have been made with respect to the GB/T 24593-2009 (the previous edition): — the requirements for length are modified (see 4.2; 4.2 in Edition 2009); — the requirements for out-of-roundness are modified (see 4.4; 4.4 in Edition 2009); — three steel designations 015Cr21Ni26Mo5Cu2, 015Cr20Ni18Mo6CuN and 022Cr21Ni25Mo7N are added (see 5.1.1 and 5.4). — the requirements for P content in chemical components of various designations were modified (see 5.1.1; 5.1.2 in Edition 2009); — underwater air tightness test is added in the pressure test options (see 5.6.2). This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of AC/TC 183 (National Technical Committee on Iron and Steel of Standardization Administration of China). The previous editions of this part are as follows: — GB/T 24593-2009. Welded Austenitic Stainless Steel Tubes for Boiler and Heat Exchanger 1 Scope This standard specifies order contents, dimension, appearance, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of welded austenitic stainless steel tubes for boiler and heat exchanger. This standard is applicable to the welded austenitic stainless steel tubes for heat exchangers and middle/low pressure boilers (hereinafter referred to as “steel tubes”). 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 (including any amendments) applies. GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products GB/T 223.11 Iron, Steel and Alloy — Determination of Chromium Content — Visual Titration or Potentiometric Titration Method 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 223.25 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 α-benzoinoxime 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 Determinaion of Nitrogen Content after Distillation Separation 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 Sulphochlorophenol S Spectrophotometric Method 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 223.60 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 223.84 Steel and Alloy — Determination of Titanium Content — Diantipyrylmethane Spectrophotometric Method GB/T 223.85 Steel and Iron — Determination of Sulfur Content — Infrared Absorption Method after Combustion in an Induction Furnace GB/T 223.86 Iron, Steel and Alloy — Determination of Total Carbon Content — Infrared Absorption Method after Combustion in an Induction Furnace GB/T 228.1 Metallic Materials — Tensile Testing — Part 1: Method of Test at Room Temperature GB/T 230.1 Metallic Materials — Rockwell Hardness Test — Part 1: Test method (Scales A, B, C, D, E, F, G, H, K, N, T) GB/T 241 Metallic Pipe — Hydraulic Pressure Test Method GB/T 242 Metallic Materials — Tube — Drift Expanding Test GB/T 245 Metallic Materials — Tube — Flanging Test GB/T 246 Metallic Materials — Tube — Flattening Test GB/T 2102 Acceptance, Packing, Marking and Quality Certification of Steel Pipe GB/T 2653 Bend Test Methods on Welded Joints GB/T 2975 Steel and Steel Products — Location and Preparation of Samples and Test Pieces for Mechanical Testing GB/T 4334-2008 Corrosion of Metals and Alloys — Test Methods for Intergranular Corrosion of Stainless Steels GB/T 4340.1 Metallic Materials — Vickers Hardness — Part 1: Test Method GB/T 6394 Determination of Estimating the Average Grain Size of Metal GB/T 7735-2016 Automated Eddy Current Testing of Seamless and Welded (Except Submerged Arc-welded) Steel Tubes for Detection of Imperfections GB/T 11170 Stainless Steel — Determination of Multi-element Contents — Spark Discharge Atomic Emission Spectrometric Method (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 20124 Steel and Iron — Determination of Nitrogen Content — Thermal Conductimetric Method after Fusion in a Current of Inert Gas (Routine Method) GB/T 21835 Dimensions and Masses per Unit Length of Welded Steel Pipes 3 Order Contents The contract or order for ordering steel tubes according to this standard shall include the following contents: a) reference to this standard; b) product name; c) designation of steel d) dimensions (outer diameter × wall thickness, in mm); e) quantity; f) special requirements. 4 Dimension, Appearance, Weight and Permissible Deviation 4.1 Outer diameter and wall thickness 4.1.1 The outer diameter (D) of the steel tubes shall not exceed 305 mm, and the wall thickness (S) shall not exceed 8.0 mm. The outer diameter and wall thickness shall comply with the requirements of GB/T 21835. 4.1.2 The tolerances for outer diameter of steel tubes shall be in accordance with those specified in Table 1. 4.1.3 Steel tubes of other diameters, wall thickness and/or allowable deviations may be supplied upon request by the purchaser through consultation between the supplier and the purchaser and as specified in the contract.   Table 1 Tolerances for Outer Diameter and Wall Thickness Dimensions in millimeters Outer diameter D Allowable deviation of Outer diameter Allowable deviation of wall thickness For thin-wall steel tubes with a ratio of wall thickness to external diameter not greater than 3%, the measured average external diameter of the steel tubes shall comply with the allowable deviation of external diameter listed in this table. 4.2 Length The normal length of steel tubes is 3,000mm to 12,000mm. Indicated in the contract upon the agreement of the supplier and the purchaser, other types of steel tubes may also be supplied. As required by the purchaser, based on the agreement of both the supplier and the purchaser and the note indicated in the contract, the steel tubes may be delivered with specified length or multiple length. The allowable deviation of the length of the fixed-length steel tube is mm. Each multiple length steel tube shall set the incision margin of 5 mm to 10 mm. 4.3 Curvature The bending of steel tubes shall not be greater than 1.5 mm/m. 4.4 Out-of-roundness The out-of-roundness of steel tube shall not exceed the permissible variation of outer diameter; however, for the thin steel tube with a ratio of wall thickness to outer diameter not greater than 3%, the out-of-roundness shall not exceed 1.5% of nominal outer diameter.   4.5 End shape The both end surfaces of steel tubes shall be vertical to the axis of steel tubes and shall be cleaned away with notch burr. 4.6 Resetting Steel tubes are generally delivered by theoretical weight. As required by the purchaser and noted in the contract, the steel tubes may be delivered according to the theoretical weight. The theoretical weight per meter of steel tubes shall be calculated by using Formula (1):
Foreword II 1 Scope 2 Normative References 3 Order Contents 4 Dimension, Appearance, Weight and Permissible Deviation 5 Technical Requirements 6 Test Methods 7 Inspection Rules 8 Packaging, Marking and Quality Certificate
Referred in GB/T 24593-2018:
*GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products
*GB/T 223.11-2008 Iron, Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
*GB/T 223.18-1994 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper Content
*GBT223.19-
*GB/T 223.25-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime gravimetric method for the determination of nickel content
*GBT223.28-
*GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy The neutral titration method for the determinaion of nitrogen content after distillation separation
*GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
*GB/T 223.40-2007 Iron, Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method
*GBT223.58-
*GB/T 223.60-1997 Methods for chemical analysis of iron,steel and alloy The perchloric acid dehydration gravimetric method for the determination of silicon content
*GB/T 223.62-1988 Methods for chemical analysis of iron, steel and alloy; The butyl acetate extraction photometric method for the determination of phosphorus content
*GB/T 223.84-2009 Steel and iron—Determination of titanium content—Diantipyrylmethane spectrophotometric method
*GB/T 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace
*GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace
*GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
*GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method
*GB/T 241-2007 Metal materials—Tube—Hydrostatic pressure test
*GB/T 242-2007 Metal materials – Tube – Drift-expending test
*GB/T 245-2016 Metallic materials-Tube-Flanging test
*GB/T 246-2017 Metallic materials - Tube - Flattening test
*GB/T 2102-2022 Acceptance, packaging, marking and quality certification for steel tubular products
*GB/T 2653-2008 Bend test methods on welded joints
*GB/T 2975-2018 Steel and steel products—Location and preparation of samples and test pieces for mechanical testing
*GB/T 4334-2008 Corrosion of metals and alloys - Test methods for intergranular corrosion of stainless steels
*GB/T 4340.1-2009 Metallic materials—Vickers hardness test—Part 1:Test method
*GB/T 6394-2017 Metal - Methods for estimating the average grain size
*GB/T 7735-2016/XG1-2021 Automated eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for detection of imperfections, includes Amendment 1
*GB/T 11170-2008 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (Routine method)
*GB/T 20066-2006 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition
*GB/T 20123-2006 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 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas
*GB/T 21835-2008 Dimensions and Masses per Unit Length of Welded Steel Pipes
Code of China
Standard
GB/T 24593-2018  Welded austenitic stainless steel tubes for boiler and heat exchanger (English Version)
Standard No.GB/T 24593-2018
Statusvalid
LanguageEnglish
File FormatPDF
Word Count7500 words
Price(USD)140.0
Implemented on2019-3-1
Deliveryvia email in 1 business day
Detail of GB/T 24593-2018
Standard No.
GB/T 24593-2018
English Name
Welded austenitic stainless steel tubes for boiler and heat exchanger
Chinese Name
锅炉和热交换器用奥氏体不锈钢焊接钢管
Chinese Classification
H48
Professional Classification
GB
ICS Classification
Issued by
SAMR and SAC
Issued on
2018-06-07
Implemented on
2019-3-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 24593-2009 Welded austenitic stainless steel tubes for boiler and heat-exchanger
Language
English
File Format
PDF
Word Count
7500 words
Price(USD)
140.0
Keywords
GB/T 24593-2018, GB 24593-2018, GBT 24593-2018, GB/T24593-2018, GB/T 24593, GB/T24593, GB24593-2018, GB 24593, GB24593, GBT24593-2018, GBT 24593, GBT24593
Introduction of GB/T 24593-2018
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 drafted in accordance with the rules given in the GB/T 1.1-2009. This standard replaces GB/T 24593-2009 Welded Austenitic Stainless Steel Tubes for Boiler and Heat-exchanger. The following technical deviations have been made with respect to the GB/T 24593-2009 (the previous edition): — the requirements for length are modified (see 4.2; 4.2 in Edition 2009); — the requirements for out-of-roundness are modified (see 4.4; 4.4 in Edition 2009); — three steel designations 015Cr21Ni26Mo5Cu2, 015Cr20Ni18Mo6CuN and 022Cr21Ni25Mo7N are added (see 5.1.1 and 5.4). — the requirements for P content in chemical components of various designations were modified (see 5.1.1; 5.1.2 in Edition 2009); — underwater air tightness test is added in the pressure test options (see 5.6.2). This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of AC/TC 183 (National Technical Committee on Iron and Steel of Standardization Administration of China). The previous editions of this part are as follows: — GB/T 24593-2009. Welded Austenitic Stainless Steel Tubes for Boiler and Heat Exchanger 1 Scope This standard specifies order contents, dimension, appearance, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of welded austenitic stainless steel tubes for boiler and heat exchanger. This standard is applicable to the welded austenitic stainless steel tubes for heat exchangers and middle/low pressure boilers (hereinafter referred to as “steel tubes”). 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 (including any amendments) applies. GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products GB/T 223.11 Iron, Steel and Alloy — Determination of Chromium Content — Visual Titration or Potentiometric Titration Method 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 223.25 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 α-benzoinoxime 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 Determinaion of Nitrogen Content after Distillation Separation 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 Sulphochlorophenol S Spectrophotometric Method 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 223.60 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 223.84 Steel and Alloy — Determination of Titanium Content — Diantipyrylmethane Spectrophotometric Method GB/T 223.85 Steel and Iron — Determination of Sulfur Content — Infrared Absorption Method after Combustion in an Induction Furnace GB/T 223.86 Iron, Steel and Alloy — Determination of Total Carbon Content — Infrared Absorption Method after Combustion in an Induction Furnace GB/T 228.1 Metallic Materials — Tensile Testing — Part 1: Method of Test at Room Temperature GB/T 230.1 Metallic Materials — Rockwell Hardness Test — Part 1: Test method (Scales A, B, C, D, E, F, G, H, K, N, T) GB/T 241 Metallic Pipe — Hydraulic Pressure Test Method GB/T 242 Metallic Materials — Tube — Drift Expanding Test GB/T 245 Metallic Materials — Tube — Flanging Test GB/T 246 Metallic Materials — Tube — Flattening Test GB/T 2102 Acceptance, Packing, Marking and Quality Certification of Steel Pipe GB/T 2653 Bend Test Methods on Welded Joints GB/T 2975 Steel and Steel Products — Location and Preparation of Samples and Test Pieces for Mechanical Testing GB/T 4334-2008 Corrosion of Metals and Alloys — Test Methods for Intergranular Corrosion of Stainless Steels GB/T 4340.1 Metallic Materials — Vickers Hardness — Part 1: Test Method GB/T 6394 Determination of Estimating the Average Grain Size of Metal GB/T 7735-2016 Automated Eddy Current Testing of Seamless and Welded (Except Submerged Arc-welded) Steel Tubes for Detection of Imperfections GB/T 11170 Stainless Steel — Determination of Multi-element Contents — Spark Discharge Atomic Emission Spectrometric Method (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 20124 Steel and Iron — Determination of Nitrogen Content — Thermal Conductimetric Method after Fusion in a Current of Inert Gas (Routine Method) GB/T 21835 Dimensions and Masses per Unit Length of Welded Steel Pipes 3 Order Contents The contract or order for ordering steel tubes according to this standard shall include the following contents: a) reference to this standard; b) product name; c) designation of steel d) dimensions (outer diameter × wall thickness, in mm); e) quantity; f) special requirements. 4 Dimension, Appearance, Weight and Permissible Deviation 4.1 Outer diameter and wall thickness 4.1.1 The outer diameter (D) of the steel tubes shall not exceed 305 mm, and the wall thickness (S) shall not exceed 8.0 mm. The outer diameter and wall thickness shall comply with the requirements of GB/T 21835. 4.1.2 The tolerances for outer diameter of steel tubes shall be in accordance with those specified in Table 1. 4.1.3 Steel tubes of other diameters, wall thickness and/or allowable deviations may be supplied upon request by the purchaser through consultation between the supplier and the purchaser and as specified in the contract.   Table 1 Tolerances for Outer Diameter and Wall Thickness Dimensions in millimeters Outer diameter D Allowable deviation of Outer diameter Allowable deviation of wall thickness For thin-wall steel tubes with a ratio of wall thickness to external diameter not greater than 3%, the measured average external diameter of the steel tubes shall comply with the allowable deviation of external diameter listed in this table. 4.2 Length The normal length of steel tubes is 3,000mm to 12,000mm. Indicated in the contract upon the agreement of the supplier and the purchaser, other types of steel tubes may also be supplied. As required by the purchaser, based on the agreement of both the supplier and the purchaser and the note indicated in the contract, the steel tubes may be delivered with specified length or multiple length. The allowable deviation of the length of the fixed-length steel tube is mm. Each multiple length steel tube shall set the incision margin of 5 mm to 10 mm. 4.3 Curvature The bending of steel tubes shall not be greater than 1.5 mm/m. 4.4 Out-of-roundness The out-of-roundness of steel tube shall not exceed the permissible variation of outer diameter; however, for the thin steel tube with a ratio of wall thickness to outer diameter not greater than 3%, the out-of-roundness shall not exceed 1.5% of nominal outer diameter.   4.5 End shape The both end surfaces of steel tubes shall be vertical to the axis of steel tubes and shall be cleaned away with notch burr. 4.6 Resetting Steel tubes are generally delivered by theoretical weight. As required by the purchaser and noted in the contract, the steel tubes may be delivered according to the theoretical weight. The theoretical weight per meter of steel tubes shall be calculated by using Formula (1):
Contents of GB/T 24593-2018
Foreword II 1 Scope 2 Normative References 3 Order Contents 4 Dimension, Appearance, Weight and Permissible Deviation 5 Technical Requirements 6 Test Methods 7 Inspection Rules 8 Packaging, Marking and Quality Certificate
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Keywords:
GB/T 24593-2018, GB 24593-2018, GBT 24593-2018, GB/T24593-2018, GB/T 24593, GB/T24593, GB24593-2018, GB 24593, GB24593, GBT24593-2018, GBT 24593, GBT24593