GB/T 713-2023 consists of
GB/T 713.1-2023 Steel plate,sheet and strip for pressure equipments―Part 1:General requirements (English Version)
GB/T 713.2-2023 Steel plate,sheet and strip for pressure equipments-Part 2:Non-alloy and alloy steel with specified temperature properties (English Version)GB/T 713.3-2023 Steel plate,sheet and strip for pressure equipments―Part 3:Low alloy steel with specified low temperature properties (English Version)
GB/T 713.4-2023 Steel plate,sheet and strip for pressure equipments—Part 4:Nickel-alloy steels with specified low temperature properties (English Version)
GB/T 713.5-2023 Steel plate,sheet and strip for pressure equipments—Part 5:High manganese steel with specified low temperature properties (English Version)
GB/T 713.6-2023 Steel plate, sheet and strip for pressure equipments—Part 6:Quenched and tempered high strength steel (English Version)
GB/T 713.7-2023 Steel plate,sheet and strip for pressure equipments—Part 7:Stainless steel and heat resisting steel (English Version)
Introduction
Pressure equipment includes boilers, pressure vessels, gas cylinders and pressure pipelines, which are widely used in various aspects of the national economy. Their common characteristics are related to production and life safety, and they are more harmful in case of accidents. There are a variety of materials used to manufacture pressure equipment, among which steel is the most widely used in actual engineering. Steel for pressure equipment is the critical raw material for the manufacture of major technical complete sets of equipment, making it the basic guarantee for the safe operation of pressure equipment. With the development of pressure equipment in the direction of large-scale, high parameters and structural diversity, its working conditions are becoming harsher, so more stringent requirements are put forward for the materials of pressure equipment. Reasonable selection of materials is all-important for the reasonable structure, safety, long-term operation and cost reduction of equipment. In order to further standardize the technical requirements of steel for pressure equipment, it is urgent to formulate a unified standard for steel plates and strips for pressure equipment, so as to be referenced in GB/T 150.2.
GB/T 713 Steel plate, sheet and strip for pressure equipments is developed to standardize the classification and designation, order information, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel plates, sheets and strips for pressure equipments such as boilers, pressure vessels, liquefied natural gas (LNG) ships and liquefied petroleum gas (LPG) ships, and is proposed to consist of the following eight parts.
——Part 1: General requirements; designed to identify the general requirements for reference in other parts.
——Part 2: Non-alloy and alloy steel with specified temperature properties; designed to determine the technical requirements for manufacturing steel strips and coil cutting steel plates and sheets with a thickness of not greater than 25.4mm and a service temperature of not lower than -20℃, as well as single rolled steel plates and sheets with a thickness of 3mm to 250mm, which are used for pressure equipments.
——Part 3: Low alloy steel with specified low temperature properties; designed to determine the technical requirements for manufacturing low alloy steel plates and sheets with a thickness of 5mm to 120mm and a service temperature of not lower than -70℃, which are used for pressure equipments.
——Part 4: Nickel-alloy steels with specified low temperature properties; designed to determine the technical requirements for nickel-alloy steel plates and sheets with specified low temperature properties with a service temperature of not lower than -196℃ and a thickness not greater than 150mm.
——Part 5: High manganese steel with specified low temperature properties; designed to determine the technical requirements for high manganese steel plates and sheets with specified low temperature properties with a service temperature of not lower than -196℃ and a thickness of 5mm to 60mm.
——Part 6: Quenched and tempered high strength steel; designed to determine the technical requirements for quenched and tempered high strength steel plates and sheets with a thickness of 10mm to 80mm, which are used for pressure equipments.
——Part 7: Stainless steel and heat resisting steel; designed to determine the technical requirements for as-rolled stainless steel and heat resisting steel plates, sheets and strips (including coil cutting steel plates/sheets), cold-rolled stainless steel and heat resisting steel plates, sheets and strips (including coil cutting steel plates/sheets) with a width of not less than 600mm, which are used for pressure equipments.
——Part 8: Homogeneous and heterogeneous rolled clad steel plates and sheets; designed to determine the technical requirements for steel plates and sheets as well as composite steel plates with stainless steel as cladding and carbon steel as base, with a thickness of greater than 100mm, which are produced through composite rolling process and used for pressure equipments.
Steel plate, sheet and strip for pressure equipments - Part 1: General requirements
1 Scope
This document specifies the designation expression, order information, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel plates, sheets and strips for pressure equipments.
This document is applicable to the manufacturing and acceptance of steel plates, sheets and strips for pressure equipments such as boilers, pressure vessels and pressure pipes (hereinafter referred to as steel plates, sheets and strips).
Specific requirements for steel plates, sheets and strips for pressure equipments are given separately in the applicable documents under GB/T 713 (all parts).
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 221 Notations for designations of iron and steel
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 228.2 Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature
GB/T 228.3 Metallic materials - Tensile testing - Part 3: Method of test at low temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 232 Metallic materials - Bend test
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709-2019 Dimension, shape, weight and tolerance for hot-rolled steel strip, plate and sheet
GB/T 713.2 Steel plate, sheet and strip for pressure equipments - Part 2: Non-alloy and alloy steel with specified temperature properties
GB/T 713.3 Steel plate, sheet and strip for pressure equipments - Part 3: Low alloy steel with specified low temperature properties
GB/T 713.4 Steel plate, sheet and strip for pressure equipments - Part 4: Nickel-alloy steels with specified low temperature properties
GB/T 713.5 Steel plate, sheet and strip for pressure equipments - Part 5: High manganese steel with specified low temperature properties
GB/T 713.6 Steel plate, sheet and strip for pressure equipments - Part 6: Quenched and tempered high strength steel
GB/T 713.7 Steel plate, sheet and strip for pressure equipments - Part 7: Stainless steel and heat resisting steel
GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing
GB/T 4334 Corrosion of metals and alloys - Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1: Test method
GB/T 5313 Steel plates with through-thickness characteristics
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 6803 Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 8650 Evaluation of pipeline and pressure vessel steels for resistance to hydrogen-induced cracking
GB/T 10561 Steel - Determination of content of nonmetallic inclusions - Micrographic method using standards diagrams
GB/T 13304.1 Steels classification - Part 1: Classification of steels according to chemical composition
GB/T 15574 Steel products classification
GB/T 17505 Steel and steel products - General technical delivery requirements
GB/T 17600.1 Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels
GB/T 17600.2 Steel - Conversion of elongation values - Part 2: Austenitic steels
GB/T 18253 Steel and steel products - Types of inspection documents
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 21433 Detecting susceptibility to intergranular corrosion in stainless steel pressure vessels
NB/T 47013.3 Nondestructive testing of pressure equipments - Part 3: Ultrasonic testing
NB/T 47013.7 Nondestructive testing of pressure equipments - Part 7: Visual testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13304.1, GB/T 15574 and GB/T 17505 as well as the following apply.
3.1
as-rolled; AR; WAR
condition of steel without any special rolling and/or heat treatment
[Source: GB/T 34560.1-2017, 3.3]
3.2
annealing; A
heat treatment process in which steel is heated to a proper temperature, kept for a certain period of time, and then slowly cooled
[Source: GB/T 7232-2012, 3.1, modified]
3.3
normalizing rolling; +N
rolling process in which the final deformation is carried out within a certain temperature range to make the steel reach a normalized state, so that the specified mechanical properties can be achieved even after normalization
Note: Normalizing rolling and thermomechanical rolling are also called "controlled rolling" in some publications.
[Source: GB/T 34560.1-2017, 3.4]
3.4
normalized; N
heat treatment process in which steel is heated and austenitized and then cooled in air to obtain pearlite steel
[Source: GB/T 34560.1-2017, 3.5, modified]
3.5
thermomechanical processed; M
rolling process in which the final deformation of steel is carried out within a certain temperature range, so as to ensure that the steel is provided with properties which cannot be obtained through heat treatment only
