SY/T 6662.4-2024 Non-metallic composite pipes for petroleum and natural gas industries Part 4: Steel wire or steel tape reinforced thermoplastic coiled composite pipes English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 6662.4-2024
Replaces SY/T 6662.4-2014
Non-metallic composite pipes for petroleum and natural gas industries Part 4: Steel wire or steel tape reinforced thermoplastic coiled composite pipes
石油天然气工业用非金属复合管 第4部分：钢丝/钢带增强热塑性塑料复合连续管
(English Translation)
Issue date: 2024-12-25 Implementation date: 2025-06-25
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Abbreviated Terms
5 Product Structure and Model Designation
5.1 Product Structure
5.2 Model Designation Method
6 Raw Materials
6.1 Liner
6.2 Reinforcement Layer
6.3 Adhesive Layer
6.4 Isolating Layer
6.5 Outer Sheath
6.6 Metal End Fittings
6.7 Seals
7 Coiled Pipe
7.1 Determination of Nominal Pressure Rating (NPR)
7.2 Determination of Maximum Operating Pressure (MOP)
7.3 Maximum Allowed Temperature
7.4 Appearance
7.5 Length
7.6 Specifications and Dimensions
7.7 Performance Requirements
7.8 Requirements for Full Reel Pressure Test
8 Inspection and Testing
8.1 Conditioning of Test Specimens
8.2 Appearance
8.3 Specifications and Dimensions
8.4 Resistance to Splitting under Compression
8.5 Longitudinal Reversion
8.6 Short-Term Hydrostatic Strength
8.7 Short-Term Burst Pressure
8.8 Axial Tensile Properties
8.9 Minimum Bend Radius
8.10 Peel Strength
8.11 Gas Tightness Performance
8.12 Full Reel Pressure Test
9 Inspection Rules
9.1 Classification of Inspections
9.2 Factory Inspection
9.3 Type Tests
10 Marking, Packaging, Transportation, and Storage
10.1 Marking
10.2 Packaging
10.3 Transportation
10.4 Storage
Appendix A (Informative) Test Method for Gas Permeability of Polymer Materials
A.1 General
A.2 Definitions
A.3 Test Principle
A.4 Test Apparatus
A.5 Test Specimens
A.6 Test Conditions
A.7 Test Procedure
A.8 Test Records
Appendix B (Normative) Specifications and Dimensions of Coiled Pipe
Appendix C (Normative) Specifications and Dimensions of End Fittings
Non-metallic Composite Pipes for the Petroleum and Natural Gas Industry – Part 4: Steel Wire/Steel Tape Reinforced Thermoplastic Coiled Composite Pipes
1 Scope
This document specifies the product structure, raw materials, technical requirements, inspection and testing, inspection rules, marking, packaging, transportation, and storage of steel wire or steel tape reinforced thermoplastic coiled composite pipes (hereinafter referred to as "coiled pipes") and their joints.
This document is applicable to the manufacture and inspection of steel wire/steel tape reinforced thermoplastic coiled composite pipes used in systems such as gathering and transportation, injection, and produced water disposal in oil and gas field surface engineering.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 699 Quality carbon structural steels
GB/T 1043.1 Plastics -- Determination of Charpy impact properties -- Part 1: Non-instrumented impact test
GB/T 1220 Stainless steel bars
GB/T 1633 Plastics -- Thermoplastic materials -- Determination of Vicat softening temperature (VST)
GB/T 1842 Plastics -- Test method for environmental stress cracking of polyethylene
GB/T 2518 Continuously hot-dip zinc-coated and zinc-iron alloy-coated steel sheet and strip
GB/T 2791 Adhesives -- Determination of T-peel strength of adhesive bonds -- Flexible-to-flexible
GB/T 2918 Plastics -- Standard atmospheres for conditioning and testing
GB/T 2965 Titanium and titanium alloy bars
GB/T 3280 Cold rolled stainless steel plate and strip
GB/T 3624 Seamless titanium and titanium alloy tubes
GB/T 3682.1 Plastics -- Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics -- Part 1: Standard method
GB/T 3934 Specifications of screw thread gauges for general purpose
GB/T 6111 Thermoplastic pipes for the conveyance of fluids -- Determination of resistance to internal pressure
GB/T 6671 Thermoplastic pipes -- Determination of longitudinal reversion
GB/T 8124 Specifications of gauges for trapezoidal screw threads
GB/T 8804.3 Thermoplastic pipes -- Determination of tensile properties -- Part 3: Polyolefin pipes
GB/T 8806 Plastic piping systems -- Determination of dimensions of plastic components
GB/T 9345.1 Plastics -- Determination of ash -- Part 1: General methods
GB/T 11182 Steel wire for rubber hose reinforcement
GB/T 14976 Seamless stainless steel pipes for fluid transport
GB/T 15558.1 Buried polyethylene (PE) piping systems for the supply of gaseous fuels -- Part 1: Pipes
GB/T 15560 Test method for short-time hydraulic failure and resistance to constant internal pressure of plastic pipes for the transport of fluids
GB/T 18252 Plastics piping systems -- Determination of the long-term hydrostatic strength of thermoplastic materials in pipe form by extrapolation
GB/T 18474 Test method for determination of gelation degree of cross-linked polyethylene (PE-X) pipes and fittings
GB/T 18475 Thermoplastic pipes for the conveyance of fluids -- Classification and designation -- Overall service (design) coefficient
GB/T 18476 Polyolefin pipes for the conveyance of fluids -- Determination of resistance to crack propagation -- Test method for slow crack growth on notched pipes
GB/T 19466.6 Plastics -- Differential scanning calorimetry (DSC) -- Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)
GB/T 20972 Petroleum and natural gas industries -- Materials for use in H2S-containing environments in oil and gas production
GB/T 25820 Steel strips for packaging
GB/T 32439 Steel wire reinforced polyethylene composite pipes for water supply
GB/T 34903.1 Petroleum, petrochemical and natural gas industries -- Non-metallic materials in contact with media related to oil and gas production -- Part 1: Thermoplastics
GB/T 34903.2 Petroleum, petrochemical and natural gas industries -- Non-metallic materials in contact with media related to oil and gas production -- Part 2: Elastomers
GB/T 39994 Determination of six metal elements (iron, calcium, magnesium, zinc, titanium, copper) in polyolefin pipes
SY/T 6794 Spoolable reinforced plastic line pipe
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
steel wire reinforced thermoplastic coiled composite pipe
A thermoplastic coiled composite pipe reinforced by steel wire braiding, referred to as steel wire reinforced coiled pipe.
3.2
steel tape reinforced thermoplastic coiled composite pipe
A thermoplastic coiled composite pipe reinforced by an even number of layers of steel tape wound helically in left and right directions, referred to as steel tape reinforced coiled pipe.
3.3
liner
The polymer layer formed by extrusion that is in direct contact with the conveyed fluid.
3.4
sour service
Oil and gas field environments containing hydrogen sulfide that can cause sulfide stress cracking, stress corrosion cracking, hydrogen induced cracking, and other forms of cracking in metallic materials.
3.5
reinforced layer
The structural layer that enhances the pressure resistance of the coiled pipe through steel wire braiding or steel tape winding.
3.6
adhesive layer
The polymer layer that bonds the steel wire braided reinforcement layer to adjacent layers by fusion or adhesion, forming an integral pipe wall without relative movement.
3.7
outer sheath
The polymer layer of the pipe that resists corrosion, wear, and mechanical damage from the external environment.
3.8
isolating layer
The polymer layer that separates the reinforcement layer from the outer sheath to prevent abrasion, cutting, and similar effects.
3.9
nominal size; DN
The nominal size related to the inner diameter, also referred to as nominal bore.
3.10
nominal pressure rating
The pressure rating of the pipe set by the manufacturer under normal temperature conditions.
3.11
maximum pressure rating
The maximum hydrostatic pressure that the pipe can withstand during long-term service under specified conditions without failure, obtained through test calculations.
