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GB/T 34204-2025Coiled tubing (English PDF)

连续油管

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 1, 2025

Implementation date

February 1, 2026

Scope

GB/T 34204-2025 is the English-translated version of 连续油管.

GB/T 34204-2025 is the Chinese standard "Coiled tubing". Its scope clause reads: This document specifies the ordering content, technical requirements, inspection and testing, non-destructive testing, marking, packaging and protection, and documentation of coiled tubing.

This document applies to the ordering, manufacturing, inspection and acceptance of carbon steel, alloy steel and stainless steel coiled tubing (hereinafter referred to as "steel tubing").

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Document preview — GB/T 34204-2025

National Standard of the People's Republic of China

ICS: 77.140.75
Classification: H 48
Replacing: GB/T 34204-2017

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

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbols and abbreviations
4.1 Symbols
4.2 Abbreviations
5 Order Contents
5.1 Contents that the purchaser should provide
5.2 Contents that the buyer can choose
5.3 Internal pipe/cable coiled tubing
6 Technical Requirements
6.1 Material Requirements
6.2 Manufacturing Process
6.3 Steel grade, designation and chemical composition
6.4 Tensile properties
6.5 Hardness
6.6 Impact
6.7 Flatten
6.8 Flaring
6.9 Weld Macro
6.10 Metallography
6.11 Fatigue test
6.12 Crush Test
6.13 Corrosion test of stainless steel coiled tubing
6.14 Anti-sulfur coiled tubing corrosion test
6.15 Hydrostatic Pressure
6.16 Diameter
6.17 Length, dimensions and weight per unit length
6.18 Weight per unit length
7 Inspection and testing
7.1 Chemical composition
7.2 Mechanical properties
7.3 Macroscopic view of weld seams
7.4 Metallographic Examination
7.5 Fatigue test
7.6 Crush test
7.7 Stainless Steel Coiled Tubing Corrosion Test
7.8 Anti-sulfur coiled tubing corrosion test
7.9 Hydrostatic pressure test
7.10 Diameter test
7.11 Length and size inspection
7.12 Invalid Test
7.13 Retest and determination
7.14 Inspection by the Buyer
8 Non-destructive Testing (NDT)
8.1 General Principles
8.2 Verification by comparison with standard sample
8.3 Personnel Qualifications
8.4 Testing standards
8.5 Nondestructive testing methods
8.6 Radiographic testing of steel strip butt welds and pipe-to-pipe butt welds
8.7 Other non-destructive testing of welds
8.8 Ultrasonic and electromagnetic testing of longitudinal welds
8.9 Magnetic Particle and Liquid Penetrant Testing
8.10 Handling of defects and imperfections
9 Logo
9.1 General Principles
9.2 Flag Order
9.3 Length
10 Packaging and Protection
10.1 Coating
10.2 Protection
10.3 Transport reel
11 File
11.1 General requirements
11.2 Quality Certificate
11.3 Record keeping
Appendix B (Normative) Pipe-to-pipe butt welding requirements
Appendix C (Normative) Minimum elongation after fracture
Appendix D (Informative) Coiled Tubing Full-Scale Fatigue Test Method
Appendix E (Normative) Dimensions of ball gauges and clearances from the inner surface of steel pipes
Appendix F (Normative) Dimensions, weight per unit length and hydrostatic test pressure
Appendix G (Normative) Buyer Inspection
Appendix H (Normative) Supplementary Nondestructive Testing Requirements
Appendix I (Informative) Coiled Tubing Transport Reel

1 Scope

This document specifies the ordering content, technical requirements, inspection and testing, non-destructive testing, marking, packaging and protection, and documentation of coiled tubing.

This document applies to the ordering, manufacturing, inspection and acceptance of carbon steel, alloy steel and stainless steel coiled tubing (hereinafter referred to as "steel tubing").

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 222 Permissible deviations of chemical composition of finished steel products

GB/T 223.5 Determination of acid-soluble silicon and total silicon content of iron and steel - Reduced molybdenum silico-siliconate spectrophotometric method

GB/T 223.9 Iron, steel and alloys - Determination of aluminum content - Chrome azurol S spectrophotometric method

GB/T 223.11 Determination of chromium content in steel and alloys - Visual titration or potentiometric titration method

GB/T 223.12 Methods for chemical analysis of iron, steel and alloys - Sodium carbonate separation-diphenylcarbazide photometric method for the determination of chromium content

GB/T 223.14 Chemical analysis of iron, steel and alloys - Tantalum extraction spectrophotometric method for the determination of vanadium content

GB/T 223.17 Chemical analysis methods for iron, steel and alloys - Diantipyryl methane photometric method for the determination of titanium content

GB/T 223.18 Methods for chemical analysis of iron, steel and alloys - Sodium thiosulfate separation-iodine titration method for the determination of copper content

GB/T 223.19 Methods for chemical analysis of iron, steel and alloys - Determination of copper content by the new cuproline-chloroform extraction spectrophotometric method

GB/T 223.23 Iron, steel and alloys - Determination of nickel content - Dimethylglyoxime spectrophotometric method

GB/T 223.25 Methods for chemical analysis of iron, steel and alloys - Dimethylglyoxime gravimetric method for the determination of nickel content

GB/T 223.26 Iron, steel and alloys - Determination of molybdenum content - Thiocyanate spectrophotometric method

GB/T 223.28 Methods for chemical analysis of iron, steel and alloys - alpha-Benzoin oxime gravimetric method for the determination of molybdenum content

GB/T 223.29 Iron, steel and alloys - Determination of lead content - Carrier precipitation-xylenol orange spectrophotometric method

GB/T 223.30 Chemical analysis methods for iron, steel and alloys - Determination of p-bromomandelic acid by precipitation and spectrophotometry - Arsenazo III Zirconium content

GB/T 223.31 Iron, steel and alloys - Determination of arsenic content - Separation by distillation - Molybdenum blue spectrophotometric method

GB/T 223.36 Methods for chemical analysis of iron, steel and alloys - Separation by distillation - Neutralization titration method for the determination of nitrogen content

GB/T 223.37 Iron, steel and alloys - Determination of nitrogen content - Indigo blue spectrophotometric method using distillation separation

GB/T 223.38 Chemical analysis methods for iron, steel and alloys - Ion exchange separation - Gravimetric method for the determination of niobium content

GB/T 223.40 Iron, steel and alloys - Determination of niobium content - Chlorosulfonylphenol S spectrophotometric method

GB/T 223.43 Iron, steel and alloys - Determination of tungsten content - Gravimetric and spectrophotometric methods

GB/T 223.47 Chemical analysis methods for iron, steel and alloys - Molybdenum blue photometric method with support precipitation for the determination of antimony content

GB/T 223.50 Chemical analysis of steel and alloys - Determination by direct photometry with phenylfluorone-cetyltrimethylammonium bromide

Tin amount

GB/T 223.59 Iron, steel and alloys - Determination of phosphorus content - Bismuth phosphomolybdenum blue spectrophotometric method and antimony phosphomolybdenum blue spectrophotometric method

GB/T 223.60 Iron, steel and alloys - Determination of silicon content - Gravimetric method

GB/T 223.62 Methods for chemical analysis of iron, steel and alloys - Determination of phosphorus content - Spectrophotometric method with butyl acetate extraction

GB/T 33821 | GB/T 33966 | GB/T 34200 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 85 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 34204

Edition	Title	Revision	Status
GB/T 34204-2025	Coiled tubing	current edition	Current
GB/T 34204-2017	Coiled tubing	previous edition	In force

This page sells the current edition, GB/T 34204-2025. Earlier editions are listed for reference only.

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