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Oil and gas industries including lower carbon energy - Equipment for well cementing - Part 1: Casing bow-spring centralizers (ISO/DIS 10427-1:2023); English version prEN ISO 10427-1:2024


This document provides testing, performance, and marking requirements for casing bow-spring centralizers to be used in oil and natural gas well construction. The procedures provide verification testing for the manufacturer's design, materials, and process specifications, and periodic testing to confirm the consistency of product performance. This specification is not applicable to other devices, such as rigid centralizers and cement baskets, or bow-spring centralizers used for other purposes (e.g., wireline tools, gravel pack, inner string). This document is a supplement to API Spec 10D 7th edition (2021), the requirements of which are applicable with the exceptions specified in this document.





Planned document number

DIN EN ISO 10427-1

Project number


Responsible national committee

NA 109-00-01-03 AK - Drilling and completion fluids, well cements and treatment fluids - Mirror committee of ISO/TC 67/SC 3  

Responsible european committee

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

Responsible international committee

ISO/TC 67/SC 3/WG 2 - Cementing  

draft standard

Oil and gas industries including lower carbon energy - Equipment for well cementing - Part 1: Casing bow-spring centralizers (ISO/DIS 10427-1:2023); English version prEN ISO 10427-1:2024
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previous edition(s)

Petroleum and natural gas industries - Casing centralizers - Part 1: Bow-spring casing centralizers (ISO 10427-1:2001); German and English version EN ISO 10427-1:2001

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