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GB/T 36026-2018High-strength corrosion-resistant alloy bars for oil and gas engineering (English PDF)

油气工程用高强度耐蚀合金棒

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 15, 2018

Implementation date

December 1, 2018

Scope

GB/T 36026-2018 is the English-translated version of 油气工程用高强度耐蚀合金棒.

GB/T 36026-2018 is the Chinese national standard for high-strength corrosion-resistant alloy bars used in oil and gas engineering. It applies to forged, hot-rolled and cold-drawn bars with a nominal diameter from 15 mm to 400 mm.

It sets out the ordering information, the dimensions, shape and weight with their permissible deviations, and the technical requirements for the melting method, chemical composition, delivery condition, mechanical properties, macrostructure, microstructure, non-destructive testing, surface quality and product marking.

It also gives the test methods, with a long list of GB/T 223 chemical analysis methods, the inspection rules for acceptance, batching and retests, and the packaging, marking and quality certificates.

Annexes compare domestic and foreign alloy grades, give basic physical properties, macrostructure charts for remelted bars and billets, and alloy microstructures. It was issued on 15 March 2018 and has applied since 1 December 2018.

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Document preview — GB/T 36026-2018

National Standard of the People's Republic of China

ICS: 77.140.99
Classification: H 59

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Order contents
4 Size, shape and weight
4.1 Dimensions and Permissible Deviations
4.2 Shape and Permissible Deviation
4.3 Weight
5 Technical requirements
5.1 Smelting Method
5.2 Chemical composition
5.3 Delivery Status
5.4 Mechanical Properties
5.5 Low magnification structure
5.6 High magnification structure
5.7 Non-destructive testing
5.8 Surface Quality
5.9 Product Logo
6 Test method
7 Inspection Rules
7.1 Inspection and Acceptance
7.2 Batch Rules
7.3 Judgment and Retest Rules
8 Packaging, Signs and Quality Certificates
Appendix A (Informative) Domestic and Foreign Alloy Grades and Groups
Appendix B (Informative) Basic physical properties of the alloy
Appendix C (Normative) Re-melted steel rods, billet low magnification chart
Appendix D (Informative Appendix) Microstructure of Alloys

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the order content, dimensions, shape, technical requirements, test methods, and quality assurance of high-strength corrosion-resistant alloy rods for oil and gas projects. Certification regulations, packaging, signs and quality certificates.

This standard applies to forging, hot rolling, cold drawing (or cold drawing) corrosion resistant alloy bars with a nominal diameter of 15mm to 400mm for oil and gas projects. (hereinafter referred to as bar).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 223.5 Determination of content of soluble silicon and total silicon in steels and alloys Reduced molybdosilicate spectrophotometric method

GB/T 223.9 Determination of iron and steel and alloy aluminium content Chrome azure S spectrophotometric method

GB/T 223.11 Determination of chromium content in steels and alloys Visual titration or potentiometric titration

GB/T 223.17 Methods for chemical analysis of iron, steel and alloy - The diantipyrine methane 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 - Iodometric 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 223.22 Methods for chemical analysis of iron, steel and alloys - Nitroso R salt spectrophotometric method for the determination of cobalt content

GB/T 223.25 Methods for chemical analysis of iron, steel and alloy. Determination of nickel by dimethylglyoxime gravimetric method

GB/T 223.26 Determination of molybdenum content in steels and alloys Thiocyanate spectrophotometric method

GB/T 223.28 Methods for chemical analysis of iron, steel and alloys - Determination of molybdenum content by alpha-benzoin hydrazine gravimetric method

GB/T 223.29 Determination of steel and alloy lead content - Precipitate - Xylenol orange spectrophotometric method

GB/T 223.38 Methods for chemical analysis of iron, steel and alloy - Ion exchange separation - gravimetric method for the determination of niobium content

GB/T 223.40 Determination of niobium content in steels and alloys chlorosulphophenol S spectrophotometric method

GB/T 223.42 Methods for chemical analysis of iron, steel and alloy - Ion exchange separation - Bromopyrogololone photometric method for the determination of ruthenium

GB/T 223.46 Methods for chemical analysis of iron, steel and alloy. The flame atomic absorption spectrometric method for the determination of magnesium content

GB/T 223.59 Determination of phosphorus content in steels and alloys - Phosphomolybdate blue spectrophotometric method and antimony-molybdenum blue spectrophotometric method

GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction spectrophotometric 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 223.73 Iron and steel alloys - Determination of titanium trichloride - Potassium dichromate titration

GB/T 223.75 Determination of boron content in steels and alloys - Methanol distillation - Curcumin photometric method

GB/T 223.77 Methods for chemical analysis of iron, steel and alloy - The flame atomic absorption spectrometric method for the determination of calcium content

GB/T 223.80 Determination of niobium and arsenic contents in steels and alloys. Hydride generation-atomic fluorescence spectrometry

GB/T 226 steel low magnification microstructure and defect acid etching test

GB/T 228.1 Tensile test of metallic materials Part 1. Test method at room temperature

GB/T 229 Charpy pendulum impact test method for metal materials

GB/T 230.1 Rockwell hardness test for metallic materials - Part 1. Test methods

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 23 pages — is available in the English PDF.

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