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Oil and gas industries including lower carbon energy - Non-metallic materials in contact with media related to oil and gas production - Part 4: Fiber-reinforced composite (ISO/DIS 23936-4:2023); English version prEN ISO 23936-4:2023


This document presents general principles and gives requirements and recommendations for the assessment of stability of non-metallic materials for service in equipment used in oil and gas production environments. This information aids in material selection. It can be applied to help avoid costly degradation failures of the equipment itself, which could pose a risk to the health and safety of the public and personnel or the environment. It supplements but does not replace, the material requirements given in the appropriate design codes, standards or regulations. This document describes the procedures for comparative testing of polymeric composite materials consisting of polymers (thermoplastics and thermosets) and re-enforcing materials e. g. glass, carbon, aramid or metals as continuous fibres or woven fabric used in equipment for oil and gas production. The compounded particulate- and short fibre-reinforced composites have been included in ISO 23936-1 and ISO 23936-3. Mechanical properties and the environmental stability of composite materials depend on the properties and environmental stability of matrix resins, fibres and fibre/resin bonding interfaces. This document focuses on the overall composite properties and their environmental stability. To permit this assessment this document utilizes flat plates and/or tubular shapes made specifically for these tests. Testing and characterization of neat resins and fibre products are beyond this scope. The equipment considered includes, but is not limited to, non-metallic pipelines, piping, liners and downhole tool components. Blistering by rapid gas decompression is not included in the scope of this document.





Planned document number

DIN EN ISO 23936-4

Project number


Responsible national committee

NA 109-00-01-70 AK - Corrosion resistant materials - Mirror committee of ISO/TC 67/WG 7  

Responsible european committee

CEN/TC 12 - Oil and gas industries including lower carbon energy.  

Responsible international committee

ISO/TC 67/WG 7 - Corrosion resistant materials  

draft standard

Oil and gas industries including lower carbon energy - Non-metallic materials in contact with media related to oil and gas production - Part 4: Fiber-reinforced composite (ISO/DIS 23936-4:2023); English version prEN ISO 23936-4:2023
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