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History
CCH 70-1 Nov. First version, prepared on the initiative of a study group (Groupe d´Etude) consisting of several European design engineers
and foundries.
and foundries.
CCH 70-2 June 1979 CCH 70-2 Second revised version took into account the accumulated experiences during the first years of use.
CCH 70-3 June 1996 Third version including quality assurance measures, introduction by the “manufacturer” and updates on non-destructive testing. The third edition is adapted:- to the actual principles of the Quality organization,- to the frequent practice of finishing the parts in the shops of a firm other than the Designer,- to the latest developments of non destructive inspections.
CCH 70-4 Oct. 2014 Fourth version, prepared by a study group comprising personnel of three foundries, four design engineers and one accredited testing and inspection body. The revised version includes: - Changes and updates in all chapters. - New chapter “VT 70-4” on visual testing. - Significant changes in chapter “UT 70-4“ in particular with regard to the evaluation of indications dependent on the depth of discontinuities.
This document is available in the following versions: Deutsch and Englisch.
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