prEN ISO 10426-1
Oil and gas industries including lower carbon energy - Cements and materials for well cementing - Part 1: Specification (ISO/DIS 10426-1:2026)
Draft Public enquiryProject stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2026-05-03
till 2026-07-02
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
91.100.10 - Cement. Gypsum. Lime. MortarForeignTC'S
CEN/TC 12Number of comments
0Comment start date
2026-05-03Scope
ISO 10426-1:2009 specifies requirements and gives recommendations for six classes of well cements, including their chemical and physical requirements and procedures for physical testing. ISO 10426-1:2009 is applicable to well cement classes A, B, C and D, which are the products obtained by grinding Portland cement clinker and, if needed, calcium sulfate as an interground additive. Processing additives can be used in the manufacture of cement of these classes. Suitable set-modifying agents can be interground or blended during manufacture of class D cement. ISO 10426-1:2009 is also applicable to well cement classes G and H, which are the products obtained by grinding clinker with no additives other than one or more forms of calcium sulfate, water or chemical additives as required for chromium (VI) reduction.Relations
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LST EN ISO 10426-1:2010/AC:2010
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