GB/T 41982-2022High alloy heat-resisting steel thick wall pipes and forgings used for power station - General specification (English PDF)

1 Scope

This document specifies the technical requirements, test methods, and inspection regulations for high-alloy heat-resistant steel thick-walled pipes and forgings (hereinafter referred to as products) for power stations.

Rules, order contents and packaging, marking and quality certificate.

This document is applicable to large-diameter and thick-walled high-alloy heat-resistant steel for power stations produced by hot extrusion or forging process (outer diameter not less than Phi219mm,

Wall thickness not less than 25mm) pipes and forgings.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

Allowable deviation of finished chemical composition of GB/T 222 steel

GB/T 223 (all parts) Methods for chemical analysis of steel and alloys

GB/T 226 Steel Low Magnification and Defect Acid Etching Test Method

GB/T 228.1 Tensile Test of Metallic Materials Part 1.Test Method at Room Temperature

GB/T 228.2 Tensile Test of Metallic Materials Part 2.High Temperature Test Method

GB/T 229 Charpy Pendulum Impact Test Method for Metallic Materials

GB/T 231.1 Brinell hardness test for metallic materials - Part 1.Test method

GB/T 232 Bending test method for metallic materials

GB/T 246 Test method for flattening of metal pipes

GB/T 1979 Structural Steel Low Magnification Defect Rating Chart

GB/T 2039 Test method for uniaxial tensile creep of metallic materials

GB/T 2102 Acceptance, packaging, marking and quality certificate of steel pipes

GB/T 2975 Sampling location and sample preparation for mechanical properties test of steel and steel products

GB/T 4336 Determination of multi-element content of carbon steel and medium and low alloy steel spark discharge atomic emission spectrometry (conventional method)

GB/T 5777-2019 Automatic full-circumferential ultrasonic testing for longitudinal and/or transverse imperfections of seamless and welded (except submerged arc welded) steel pipes

GB/T 6060.2 Surface roughness comparison sample block grinding, turning, boring, milling, inserting and planing surface

GB/T 6394 Metal Average Grain Size Determination Method

GB/T 7735-2016 Automatic Eddy Current Inspection for Defects in Seamless and Welded (except Submerged Arc Welded) Steel Pipes

GB/T 8541 Forging Terms

GB/T 10561-2005 Determination of non-metallic inclusion content in steel, standard rating chart microscopic inspection method

GB/T 11261 Determination of Oxygen Content in Iron and Steel Pulse Heating Inert Gas Melting-Infrared Absorption Method

GB/T 13298 Metal Microstructure Test Method

GB/T 17394.1 Leeb hardness test for metallic materials - Part 1.Test method

GB/T 20066 Sampling and sample preparation method of samples for determination of chemical composition of steel and iron

GB/T 20123 Determination of total carbon and sulfur content of iron and steel by infrared absorption method after high-frequency induction furnace combustion (conventional method) […]