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GB/T 46418-2025Titanium alloy tubing and casing (English PDF)

钛合金油管和套管

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46418-2025 is the English-translated version of 钛合金油管和套管.

GB/T 46418-2025 is the Chinese standard "Titanium alloy tubing and casing". Its scope clause reads: This document specifies the materials, specifications, technical requirements, testing and inspection, marking, and labeling of titanium alloy tubing and casing for the oil and gas industry.

Identification and surface treatment, handling, storage and packaging. This document applies to the manufacture, inspection, and storage of titanium alloy tubing and casing. Its clauses include terms and definitions.

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Document preview — GB/T 46418-2025

National Standard of the People's Republic of China

ICS: 75.180.10
Classification: E 92

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

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4 Symbols
5.Materials and Specifications
5.1 Materials
5.2 Manufacturing Process
5.3 Intensity Levels and Naming
5.4 Specification
5.5 Thread Machining
6 Technical Requirements
6.1 Chemical composition
6.2 Tensile properties
6.3 Hardness
6.4 Toughness
6.5 Corrosion resistance
6.6 Simulated operating condition test
6.7 Geometric Dimensions, Tolerances, and Mass
6.8 Hydrostatic pressure test
6.9 Buyer Inspection
6.10 Visual Inspection
6.11 Non-destructive testing
6.12 Defect
7.Testing and Inspection
7.1 Chemical Analysis
7.2 Tensile test
7.3 Hardness Test
7.4 Impact Test
7.5 Corrosion Test
8 Marking, Labelling and Surface Treatment
8.1 Mark
8.2 Mark
8.3 Molding
8.4 Surface Cleaning
8.5 Color-coded signage
9.Handling, storage and packaging
9.1 General Requirements
9.2 Moving
9.3 Storage
9.4 Packaging
10 Quality Certificates
Appendix A (Informative) Recommended Service Limits for Titanium Alloy Materials for Tubing and Casing
Appendix B (Informative) Intensity Levels and Naming
Appendix C (Normative) Elongation and Hardness Requirements
Appendix D (Normative) Buyer Inspection
References

1 Scope

This document specifies the materials, specifications, technical requirements, testing and inspection, marking, and labeling of titanium alloy tubing and casing for the oil and gas industry.

Identification and surface treatment, handling, storage and packaging.

This document applies to the manufacture, inspection, and storage of titanium alloy tubing and casing.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies; for undated references, the latest version (including all revisions) applies.

This document.

GB/T 228.1 Metallic materials - Tensile testing - Part 1.Test method at room temperature

GB/T 229 Metallic materials Charpy impact test method

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

GB/T 3620.1 Grades and Chemical Compositions of Titanium and Titanium Alloys

GB/T 3620.2 Permissible Deviations in Chemical Composition of Titanium and Titanium Alloy Processed Products

GB/T 4157-2017 Laboratory test methods for resistance of metals to sulfide stress cracking and stress corrosion cracking in hydrogen sulfide environments

GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1.Test method

GB/T 4698 (all parts) Chemical analysis methods for sponge titanium, titanium and titanium alloys

GB/T 6611 Terminology and Metallographic Atlas of Titanium and Titanium Alloys

GB/T 8650 Evaluation Method for Resistance to Hydrogen-Induced Cracking of Pipeline Steel and Pressure Vessel Steel

GB/T 12969.1 Ultrasonic testing method for titanium and titanium alloy pipes

GB/T 12969.2 Eddy current testing method for titanium and titanium alloy pipes

GB/T 15970.1 Corrosion of metals and alloys - Stress corrosion testing - Part 1.General test methods

GB/T 15970.3 Corrosion of metals and alloys - Stress corrosion testing - Part 3.Preparation and application of U-shaped bending specimens

GB/T 15970.5 Corrosion of metals and alloys - Stress corrosion testing - Part 5.Preparation and application of C-ring specimens

GB/T 17897-2016 Corrosion of Metals and Alloys - Test Method for Pitting Corrosion of Stainless Steel with Ferric Chloride

GB/T 18590 Evaluation method for pitting corrosion of metals and alloys

GB/T 19291 Corrosion Testing of Metals and Alloys - General Principles

GB/T 19830 Steel pipes for oil and gas well casing or tubing in the petroleum and natural gas industry

GB/T 23802 Technical delivery specifications for corrosion-resistant alloy seamless tubes used in casing, tubing, coupling blanks and accessories for the oil and gas industry condition

3 Terms and Definitions

The terms and definitions defined in GB/T 19830 and GB/T 6611, as well as the following terms and definitions, apply to this document.

3.1 Titanium alloy oil tubing

Oil pipes made of titanium alloy.

GB/T 23258 | SY/T 5164 | GB 50341 | GB/T 29169 | GB/T 17389 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 31 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 4698

Editions of GB/T 46418

Edition	Title	Revision	Status
GB/T 46418-2025	Titanium alloy tubing and casing	current edition	Current

This page sells the current edition, GB/T 46418-2025. Earlier editions are listed for reference only.

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