CCS Rule Change Notice No. 1, effective from January 1, 2025, outlines updates to the CCS Rules for Materials and Welding.
The China Classification Society (CCS)Rule Change Notice No. 1, effective from January 1, 2025, outlines updates to the CCS Rules for Materials and Welding. This notice addresses key changes in the rules related to metallic materials, welding, and non-destructive inspections.
Part One, which focuses on metallic materials, includes Chapter 6 on steel castings. The notice states that test material must be provided in sufficient quantities for required tests and potential retests, with test blocks representing the properties of the entire casting. The test sample thickness should be at least 30mm or equal to the ruling section of the casting, whichever is greater. For thin-walled steel castings, the thickness of the test sample must be at least 20mm. The test samples must be heat-treated along with the castings before detachment and must meet specific size and location requirements based on ISO standards. In the case of small batch testing, separately cast test samples may be used if they meet the minimum thickness specified by recognized standards like ISO 4990.
Chapter 9 addresses other non-ferrous materials, specifically copper alloy propellers. For these propellers, the standard practice is to cast separate keel block-type test samples. If the test bars are attached to the blades,
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