GB/T 43673-2024
Non-metallic cable laying composite coiled tubing (English Version)

Standard No.

GB/T 43673-2024

Language

Chinese, Available in English version

Release Date

2024

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China  CN  /  GB

Latest

GB/T 43673-2024

Introduction

Analysis of the core content of the standard

Comparison dimensions	Bonded type (Type I)	Non-bonded type (Type II)
Structural characteristics	Fusion/bonded integral pipe wall	Layered structure can be relatively displaced
Typical pressure level (MPa)	10-30	16-32
Minimum bending radius (mm)	950-1150	800-1150
Applicable scenarios	High pressure stable working conditions	Frequent bending scenarios

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Detailed explanation of key technical indicators

1. Material system requirements

The standard clearly classifies lining layer materials:

• PE material: Must reach PE80 or PE100 grade (GB/T 18475)
• PEX material: Meets the requirements of GB/T 18992.2 cross-linked polyethylene
• Acidic gas environment: Additional test of H₂S/CO₂ permeability (Appendix B) is required

2. Core performance parameters

Test items	Technical requirements	Test methods
Short-term hydrostatic strength	2 times NPR for 165h without leakage	GB/T 6111
Short-term bursting pressure	≥3 times NPR	GB/T 15560
Conductor resistance unbalance	≤3%	GB/T 3048.4
Insulation resistance	＞500MΩ	GB/T 3048.5

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Key points for implementation of the standard

1. Inspection rules

Factory inspection shall include 7 major items:

1. Appearance quality (visual inspection)
2. Dimensional accuracy (GB/T 8806)
3. Bursting pressure test
4. Tensile performance verification
5. Conductor resistance test
6. Insulation resistance test
7. Whole roll pressure test (1h NPR pressure)

2. Installation specifications

Key control points:

• Bending radius: always greater than MBR (minimum bending radius)
• Lowering speed: 5-8m/min, reduced to 1-5m/min when the suspended weight is abnormal
• Electrical performance monitoring: test the cable insulation resistance every 500m
• Pressure balance: fill the pipe with clean water before lowering to prevent crushing

Technical evolution background

Compared with industry specifications such as SY/T 6662.2, this standard has three major breakthroughs:

1. Cable integration standardization: for the first time, the integration technical requirements of power cables, signal cables and auxiliary heating cables are clarified
2. Material system expansion: New applicable specifications for high-performance polymers such as PVDF and PA
3. Intelligent monitoring support: The integrated solution of supporting optical fiber (GB/T 9771.1) lays the foundation for digital oil fields

GB/T 43673-2024 Referenced Document

• FZ/T 54076 Para-aramid (1414) filament
• GB/T 12357.1 Multimode Optical Fiber for Telecommunication - Part 1: Characteristics of A1 Category Multimode Optical Fiber*， 2024-12-31 Update
• GB/T 13657 Bisphenol-A epoxy resin
• GB/T 14976 Stainless Steel Seamless Steel Pipes for Fluid Conveying*， 2025-08-01 Update
• GB/T 26752 PAN-based carbon fibre
• GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
• GB/T 2918 Standard environment for conditioning and testing of plastic specimens
• GB/T 3048.4 Test Methods for Electrical Performance of Wires and Cables - Part 4: Test for Direct Current Resistance of Conductors*， 2025-08-29 Update
• GB/T 3048.5 Test methods for electrical properties of electric cables and wires.Part 5: Test of insulation resistance
• GB/T 3048.8 Test Methods for Electrical Performance of Wires and Cables - Part 8: AC Voltage Test*， 2025-10-05 Update
• GB/T 3956 Conductors of insulated cables
• GB/T 6111 Thermoplastics piping systems for the conveyance of fluids.Determination of the resistance to internal pressure
• GB/T 8162 Seamless steel tubes for structural purposes
• GB/T 8237 Liquid unsaturated polyester resin for fiber-reinforced plastics*， 2025-06-30 Update
• GB/T 8806 Plastics piping systems.Plastics components.Determination of dimensions
• GB/T 9771.1 Single-mode optical fibres for telecommunication—Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
• ISO 10931 Plastics piping systems for industrial applications — Poly(vinylidene fluoride) (PVDF) — Specifications for components and the system AMENDMENT 1
• ISO 16486-1 Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 1: General
• JB/T 13484 Rated voltage 0.6/1kV fluoroplastic insulated power cable
• JB/T 5331 Particular types of aromatic polyimide tape wrapped round copper wire for submersible motor
• SY/T 6662.2 Non-metallic composite pipes for the oil and gas industry Part 2: Flexible composite high-pressure conveying pipes

GB/T 43673-2024 history

• 2024 GB/T 43673-2024 Non-metallic cable laying composite coiled tubing

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