GB/T 46419-2025Petroleum and natural gas industries - Titanium alloy induction bends (English PDF)

石油天然气工业　钛合金感应加热弯管

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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 46419-2025 is the English-translated version of 石油天然气工业　钛合金感应加热弯管.

GB/T 46419-2025 is the Chinese national standard covering the titanium induction bend - the heating and forming parameters and the thinning at the extrados they cause, the microstructure and the properties after bending, the contamination that titanium picks up when heated in air, and the inspection. First edition, in force from 1 May 2026. Issued on 5 October 2025, it has been in force since 1 May 2026.

Document preview — GB/T 46419-2025

National Standard of the People's Republic of China

ICS: 75.200
Classification: E 16

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

1.Scope1
2 Normative References1
3.Terms and Definitions2
4.Symbols and Abbreviations2
4.1 Symbol2
4.2 Abbreviations3
6.Materials3
7 Manufacturing3
7.1 Basic Parameters of Pipe Bends3
7.2 Pipe Bending Process Qualification4
7.3 Manufacturing Process Specifications4
7.4 Bending4
7.5 Heat treatment after bending5
7.6 Post-bending shaping and sizing5
8 Technical Requirements6
8.1 Material Requirements6
8.2 Main pipe requirements6
8.3 Appearance Quality6
8.4 Surface contamination7
8.5 Dimensions and Tolerances7
8.6 Pipe end beveling9
8.7 Tensile properties10
8.8 Charpy (V-notch) impact energy absorption11
8.9 Bending performance11
8.10 Flattening performance11
8.11 Corrosion performance11
8.12 Pressure resistance11
8.13 Non-destructive testing11
9 Inspection and Testing12
9.1 General Requirements12
9.2 Sampling12
9.3 Chemical Composition Analysis13
9.4 Appearance Quality Inspection13
9.5 Surface contamination inspection13
9.6 Dimensional Measurement13
9.7 Pipe end bevel14
9.8 Tensile test14
9.9 Charpy Impact Test14
9.10 Bending Test14
9.11 Flattening Test14
9.12 Corrosion Test14
9.13 Hydraulic Test14
9.14 Non-destructive testing14
9.15 Re-inspection15
9.16 Fixed15
10 Acceptance15
10.1 General Requirements15
10.2 Quality Certificate Requirements15
11 Marking, Packaging, Transport and Storage16
11.1 Mark16
23 Appendix D (Normative) Corrosion Resistance Test 24 D.1 Corrosion Factors 24 D.2 Corrosion Test24

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Petroleum and Natural Gas (SAC/TC355). This document was drafted by: China Petroleum Engineering Materials Research Institute Co., Ltd., Baoji Titanium Equipment Manufacturing (Baoji) Co., Ltd., and Henan Xin Open Source Petrochemical Pipeline Co., Ltd., Nanjing Pret Titanium Industry Co., Ltd., Nanjing Maichi Titanium Industry Co., Ltd., Xi'an Unite Container Manufacturing Co., Ltd. The company, Nanjing Baose Co., Ltd., Luoyang Shipbuilding Materials Research Institute (725th Research Institute of China Shipbuilding Group Co., Ltd.), China Petroleum Tian Oil and Gas Technology Research Institute of Changqing Oilfield Branch of China National Gas & Natural Gas Corporation and Southwest Oil & Gas Field Branch of China National Petroleum Corporation Engineering Technology Research Institute, Tarim Oilfield Branch of China National Petroleum Corporation, and Jianchang Industrial Qianjiang Co., Ltd. of Jianghan Oilfield. The main drafters of this document are. Wang Rui, Wang Lianguo, Li Dongfeng, Xu Ting, Song Zeyu, Wan Jianchun, Wang Jianhong, Chen Xinyi, Zhang Weigang, and Yan Jianwang. Lei Yong, Yang Peng, Song Dejun, Wu Chunsheng, Yin Qiang, Kong Lingfeng, Sun Wei, Cheng Huanhuan. Titanium alloy induction heating bends for the oil and gas industry

1 Scope

This document specifies the material, manufacturing, and technical requirements for titanium and titanium alloy induction heating bends (hereinafter referred to as "bends") used in the oil and gas industry. Inspection and testing, acceptance, labeling, packaging, transportation, and storage. This document applies to seamless and welded bends of DN15~DN750 manufactured from titanium and titanium alloy materials for the oil and gas industry.

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 to this document; for undated references, the latest version (including all amendments) applies. This document.

GB/T 228.1 Metallic materials - Tensile testing - Part

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 28 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 232 · GB/T 244 · GB/T 246 · GB/T 2651 · GB/T 2653 · GB/T 4698 · GB/T 18590 · GB/T 29168.1

Editions of GB/T 46419

Edition	Title	Revision	Status
GB/T 46419-2025	Petroleum and natural gas industries - Titanium alloy induction bends	current edition	Current

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