SY/T 5037-2023 Submerged arc-welded steel pipe for common fluid service pipeline
1 Scope
This document specifies the dimensions, shape, mass, technical requirements, inspection and testing methods, inspection rules, coating, marking and quality certificate of submerged arc-welded steel pipes (including longitudinal submerged arc-welded steel pipes and spiral submerged arc-welded steel pipes, hereinafter referred to as "steel pipes") for common fluid service pipelines.
This document is applicable to steel pipes for conveying common fluids such as water, air, and heating steam, and also to steel pipes for conveying other fluids with similar requirements.
This document is also applicable to steel pipes with socket/spigot joints for water conveyance projects (such as long-distance water diversion, municipal water supply and drainage, and agricultural irrigation pipeline projects).
2 Normative references
The following documents contain provisions 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 222 Permissible tolerances for chemical composition of steel products
GB/T 223 (All parts) Methods for chemical analysis of iron, steel and alloy
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 241 Metal materials - Tube - Hydrostatic pressure test
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 1591 High strength low alloy structural steels
GB/T 2651 Destructive tests on welds in metallic materials - Transverse tensile test
GB/T 2653 Bend test methods on welded joints
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 9445 Non-destructive testing - Qualification and certification of NDT personnel
GB/T 9711 Petroleum and natural gas industries - Steel pipe for pipeline transportation systems
GB/T 13295 Ductile iron pipes, fittings and accessories for water or gas applications
GB/T 14164 Hot rolled wide strips for line pipe of petroleum and natural gas
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
GB/T 21237 Wide and heavy plates for line pipe of petroleum and natural gas
GB/T 21835 Dimensions and masses per unit length of welded steel pipes
GB/T 23901.1 Non-destructive testing - Image quality of radiographs - Part 1: Determination of the image quality value using wire-type image quality indicators
GB/T 40385 Non-destructive testing of steel tubes - Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections
GB/T 40791 Non-destructive testing of steel tubes - Radiographic testing of the weld seam of welded steel tubes for the detection of imperfections
ISO 10893-8 Non-destructive testing of steel tubes - Part 8: Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections
ISO 10893-11 Non-destructive testing of steel tubes - Part 11: Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13295 and the following apply.
3.1
spigot gasket flexible joint for steel pipe
sealed pipeline connection joint capable of accommodating a certain range of water pressure and displacement, formed by inserting a rubber sealing ring into the socket or spigot of the steel pipe, then applying force to insert the pipe end
3.2
integrated forming socket/spigot joint
pipeline connection joint where the socket/plug is directly formed at the pipe end of the steel pipe by expanding forming or roll forming processes
3.3
welding forming socket/spigot joint
pipeline connection joint formed by welding the socket or spigot to the steel pipe end using lap welding technology
4 Symbols
For the purposes of this document, the following symbols apply.
D——Nominal outside diameter of steel pipe, mm;
H——Weld reinforcement, mm;
L——Length of single steel pipe, mm;
M——Mass per unit length of steel pipe, kg/m;
p——Hydrostatic test pressure, MPa;
S——Circumferential stress during hydrostatic test, MPa;
t——Nominal wall thickness of steel pipe, mm.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Dimensions, shape and mass
5.1 Outside diameter and wall thickness
5.2 Length
5.3 Out-of-roundness
5.4 Straightness
5.5 Pipe ends
5.6 Steel pipe mass
6 Technical requirements
6.1 Manufacturing methods
6.2 Steel grade
6.3 Chemical composition
6.4 Mechanical properties
6.5 Hydrostatic test
6.6 Type test for sealing performance of spigot gasket flexible joint for steel pipe
6.7 Welding joint macroetch inspection
6.8 Non-destructive testing
6.9 Appearance quality
6.10 Other surface defects and imperfections
6.11 Handling of imperfections and defects
6.12 Requirements for grinding and repair
7 Inspection and test methods
7.1 Chemical analysis
7.2 Tensile test
7.3 Impact test
7.4 Guided-bend test
7.5 Hydrostatic test
7.6 Welding joint macroetch inspection
7.7 Non-destructive testing
8 Inspection rules
8.1 Surface and dimensional inspection
8.2 Chemical composition of base metal
8.3 Tensile test
8.4 Impact test
8.5 Guided-bend test
8.6 Acid etching inspection for welding joint
8.7 Non-destructive testing
9 Coating, marking and quality certificate
9.1 Coating
9.2 Marking
9.3 Quality certificate
Annex A (Normative) X-ray testing
