This document specifies requirements for the manufacture of welded and seamless steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries, including two product specification levels (PSL 1 and PSL 2).
This document is applicable to the manufacture, inspection, marking, coating, recording and loading of welded and seamless pipes for use in pipeline transportation systems in the petroleum and natural gas industries. The manufacture and inspection of steel pipes for pure hydrogen transmission pipelines shall be carried out with reference to this document.
This document is not applicable to cast pipes.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 9253 Petroleum and natural gas industries - Threading, gauging and thread inspection of casing, tubing, and line pipe threads
TSG Z8001 Examination rules for nondestructive testing inspectors of special equipment
ISO 6507-1 Metallic materials - Vickers hardness test - Part 1: Test method
ISO 6508-1 Metallic materials - Rockwell hardness test - Part 1: Test method
API Spec 5L:2018 Line pipe
ASTM E18 Standard test methods for rockwell hardness of metallic materials
ASTM E92 Standard test methods for vickers hardness and knoop hardness of metallic materials
3 Terms and definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions, symbols and abbreviated terms given in API Spec 5L:2018 apply.
4 Information to be supplied by the purchaser
In addition to the requirements of API Spec 5L:2018, Clause 7, if agreed, the purchase order for a specific order batch shall also include which of the following requirements apply:
a) Requirements of grain size, banded structure and inclusions of raw materials for PSL 2 pipes with resistance to ductile fracture propagation in gas transmission pipelines (see 5.2);
b) Hydrostatic test of jointers (see 5.3);
c) PSL 2 pipe ordered for pure hydrogen transmission pipelines (see Annex A);
d) Evaluation of abnormal fractures in drop-weight tear (DWT) test (see Annex B).
Foreword I Introduction VI 1 Scope 2 Normative references 3 Terms and definitions, symbols and abbreviated terms 4 Information to be supplied by the purchaser 5 Technical requirements 5.1 General 5.2 Grain size, banded structure and inclusions of PSL 2 pipe with resistance to ductile fracture propagation 5.3 Hydrostatic test of jointer 5.4 Hardness test of PSL 2 pipe 5.5 Maximum permissible outside weld bead height at pipe ends of SAW and COW pipes 5.6 Location of test pipe for Charpy impact test of weld and HAZ in case of welding deviation 5.7 Requirements for actual pressure during hydrostatic test with end-sealing ram 5.8 Re-inspection of guided-bend test 5.9 Inspection of qualification test of repair welding operators 5.10 Equivalent standard for the qualification and certification of NDT personnel 5.11 Equipment calibration for radiographic testing of welds 5.12 EPRG guidelines - Method 1 5.13 Ordering of PSL 2 pipe for pure hydrogen transmission pipelines 5.14 Evaluation of abnormal fractures in drop-weight tear (DWT) test 5.15 Marking Annex A (Informative) Ordering of PSL 2 pipe for pure hydrogen transmission pipelines A.1 General A.2 Additional information to be supplied by the purchaser A.3 Manufacturing A.4 Acceptance limit A.5 Surface conditions, imperfections, and defects A.6 High-frequency welded (HFW) pipe weld burrs A.7 Inspection A.8 Steel pipe marking Annex B (Informative) Recommended practice for evaluation of abnormal fracture in DWT test B.1 General B.2 Definition and classification of abnormal fracture B.3 Evaluation of abnormal fracture Bibliography
Petroleum and natural gas industries -
Steel pipe for pipeline transportation systems
1 Scope
This document specifies requirements for the manufacture of welded and seamless steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries, including two product specification levels (PSL 1 and PSL 2).
This document is applicable to the manufacture, inspection, marking, coating, recording and loading of welded and seamless pipes for use in pipeline transportation systems in the petroleum and natural gas industries. The manufacture and inspection of steel pipes for pure hydrogen transmission pipelines shall be carried out with reference to this document.
This document is not applicable to cast pipes.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 9253 Petroleum and natural gas industries - Threading, gauging and thread inspection of casing, tubing, and line pipe threads
TSG Z8001 Examination rules for nondestructive testing inspectors of special equipment
ISO 6507-1 Metallic materials - Vickers hardness test - Part 1: Test method
ISO 6508-1 Metallic materials - Rockwell hardness test - Part 1: Test method
API Spec 5L:2018 Line pipe
ASTM E18 Standard test methods for rockwell hardness of metallic materials
ASTM E92 Standard test methods for vickers hardness and knoop hardness of metallic materials
3 Terms and definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions, symbols and abbreviated terms given in API Spec 5L:2018 apply.
4 Information to be supplied by the purchaser
In addition to the requirements of API Spec 5L:2018, Clause 7, if agreed, the purchase order for a specific order batch shall also include which of the following requirements apply:
a) Requirements of grain size, banded structure and inclusions of raw materials for PSL 2 pipes with resistance to ductile fracture propagation in gas transmission pipelines (see 5.2);
b) Hydrostatic test of jointers (see 5.3);
c) PSL 2 pipe ordered for pure hydrogen transmission pipelines (see Annex A);
d) Evaluation of abnormal fractures in drop-weight tear (DWT) test (see Annex B).
Contents of GB/T 9711-2023
Foreword I
Introduction VI
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviated terms
4 Information to be supplied by the purchaser
5 Technical requirements
5.1 General
5.2 Grain size, banded structure and inclusions of PSL 2 pipe with resistance to ductile fracture propagation
5.3 Hydrostatic test of jointer
5.4 Hardness test of PSL 2 pipe
5.5 Maximum permissible outside weld bead height at pipe ends of SAW and COW pipes
5.6 Location of test pipe for Charpy impact test of weld and HAZ in case of welding deviation
5.7 Requirements for actual pressure during hydrostatic test with end-sealing ram
5.8 Re-inspection of guided-bend test
5.9 Inspection of qualification test of repair welding operators
5.10 Equivalent standard for the qualification and certification of NDT personnel
5.11 Equipment calibration for radiographic testing of welds
5.12 EPRG guidelines - Method 1
5.13 Ordering of PSL 2 pipe for pure hydrogen transmission pipelines
5.14 Evaluation of abnormal fractures in drop-weight tear (DWT) test
5.15 Marking
Annex A (Informative) Ordering of PSL 2 pipe for pure hydrogen transmission pipelines
A.1 General
A.2 Additional information to be supplied by the purchaser
A.3 Manufacturing
A.4 Acceptance limit
A.5 Surface conditions, imperfections, and defects
A.6 High-frequency welded (HFW) pipe weld burrs
A.7 Inspection
A.8 Steel pipe marking
Annex B (Informative) Recommended practice for evaluation of abnormal fracture in DWT test
B.1 General
B.2 Definition and classification of abnormal fracture
B.3 Evaluation of abnormal fracture
Bibliography
