1 Scope
This standard specifies order contents, material, manufacturing, heat treatment, inspections and tests, welding repair, surface protection and package, product quality certificate and other technical requirements of steel butt-welding pipe fittings (hereinafter referred to as pipe fittings).
This standard is applicable to pipe fittings specified in GB/T 12459 and it also can be taken as reference to other pipe fittings.
2 Normative References
The following documents for the application of this standard are essential. For dated references, only the editions cited apply. For undated references, their latest editions (including any amendments) apply.
GB 150.4-2011 Pressure Vessels - Part 4: Fabrication, Inspection and Testing, and Acceptance
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223(All Parts) Methods for Chemical Analysis of Iron, Steel and Alloy
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 2975 Steel and Steel Products-Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4334 Corrosion of Metals and Alloys-Test Methods for Intergranular Corrosion of Stainless Steels
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 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 9452 Testing Method for Working Zone of Heat Treatment Furnace
GB/T 10561 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams
GB/T 11170 Stainless Steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 12459-2017 Steel Buttwelding Pipe Fittings - Types and Parameter
GB/T 13305 Micrographic Method for Determining Area Content of the α-phases in Stainless Steels
GB/T 18253-2000 Steel and Steel Products - Types of Inspection Documents
GB/T 20801.2 Pressure Piping Code - Industrial Piping - Part 2: Materials
NB/T 47013.2 Nondestructive Testing of Pressure Equipments - Part 2: Radiographic Testing
NB/T 47013.3 Nondestructive Testing of Pressure Equipments - Part 3: Ultrasonic Testing
NB/T 47013.4 Nondestructive Testing of Pressure Equipments - Part 4:Magnetic Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipments - Part 5: Penetrant Testing
NB/T 47014 Welding Procedure Qualification for Pressure Equipment
NB/T 47015 Welding Specification for Pressure Vessels
TSG Z6002 Examination Rules for Welding Operators of Special Equipment
TSG Z8001 Examination Rules for Special Equipment Non-destructive Testing Inspectors
3 Order Contents
The purchaser shall provide the following information required for pipe fittings to be purchased in orders:
a) Variety or code;
b) Material grade (see 4.2);
Foreword i
1 Scope
2 Normative References
3 Order Contents
4 Materials
5 Manufacture
6 Heat Treatment
7 Inspections and Tests
7.1 Mechanical Properties
7.1.1 Mechanical Property Specimen
7.1.2 Tensile Test
7.1.3 Impact Test
7.1.4 Hardness Test
7.1.5 Repeated Heat Treatment
7.2 Shape, Size and Appearance
7.3 Nondestructive Testing
7.4 Metallographic Inspection
7.5 Hydrostatic Test
7.6 Summary of Inspections and Tests
8 Welding Repair
9 Surface Protection and Package
10 Product Quality Certificate
Annex A (Normative) Additional Requirements
Annex B (Informative) Raw Materials for Pipe Fittings
1 Scope
This standard specifies order contents, material, manufacturing, heat treatment, inspections and tests, welding repair, surface protection and package, product quality certificate and other technical requirements of steel butt-welding pipe fittings (hereinafter referred to as pipe fittings).
This standard is applicable to pipe fittings specified in GB/T 12459 and it also can be taken as reference to other pipe fittings.
2 Normative References
The following documents for the application of this standard are essential. For dated references, only the editions cited apply. For undated references, their latest editions (including any amendments) apply.
GB 150.4-2011 Pressure Vessels - Part 4: Fabrication, Inspection and Testing, and Acceptance
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223(All Parts) Methods for Chemical Analysis of Iron, Steel and Alloy
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 2975 Steel and Steel Products-Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4334 Corrosion of Metals and Alloys-Test Methods for Intergranular Corrosion of Stainless Steels
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 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 9452 Testing Method for Working Zone of Heat Treatment Furnace
GB/T 10561 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams
GB/T 11170 Stainless Steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 12459-2017 Steel Buttwelding Pipe Fittings - Types and Parameter
GB/T 13305 Micrographic Method for Determining Area Content of the α-phases in Stainless Steels
GB/T 18253-2000 Steel and Steel Products - Types of Inspection Documents
GB/T 20801.2 Pressure Piping Code - Industrial Piping - Part 2: Materials
NB/T 47013.2 Nondestructive Testing of Pressure Equipments - Part 2: Radiographic Testing
NB/T 47013.3 Nondestructive Testing of Pressure Equipments - Part 3: Ultrasonic Testing
NB/T 47013.4 Nondestructive Testing of Pressure Equipments - Part 4:Magnetic Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipments - Part 5: Penetrant Testing
NB/T 47014 Welding Procedure Qualification for Pressure Equipment
NB/T 47015 Welding Specification for Pressure Vessels
TSG Z6002 Examination Rules for Welding Operators of Special Equipment
TSG Z8001 Examination Rules for Special Equipment Non-destructive Testing Inspectors
3 Order Contents
The purchaser shall provide the following information required for pipe fittings to be purchased in orders:
a) Variety or code;
b) Material grade (see 4.2);
Contents of GB/T 13401-2017
Foreword i
1 Scope
2 Normative References
3 Order Contents
4 Materials
5 Manufacture
6 Heat Treatment
7 Inspections and Tests
7.1 Mechanical Properties
7.1.1 Mechanical Property Specimen
7.1.2 Tensile Test
7.1.3 Impact Test
7.1.4 Hardness Test
7.1.5 Repeated Heat Treatment
7.2 Shape, Size and Appearance
7.3 Nondestructive Testing
7.4 Metallographic Inspection
7.5 Hydrostatic Test
7.6 Summary of Inspections and Tests
8 Welding Repair
9 Surface Protection and Package
10 Product Quality Certificate
Annex A (Normative) Additional Requirements
Annex B (Informative) Raw Materials for Pipe Fittings
