T/CISA 375-2024 Large line energy welding steel plate for ships and offshore engineering

Scope

Main technical content: Large-line energy welding is a highly efficient welding technology adopted in the fields of shipbuilding and marine engineering. Large-line energy welding is characterized by high automation, minimal human interference, and stable welding quality. It features high single-pass heat input and significantly improved welding efficiency, which has gained popularity among manufacturing enterprises and is increasingly widely applied. This document is based on the actual situation of large-line energy welded steel plates used in shipbuilding and marine engineering, and formulates a group standard that meets practical needs and industry characteristics. On the basis of GB/T 712—2022 "Structural Steel for Ships and Marine Engineering", this document specifies the chemical composition range for large-line energy welded steel plates used in shipbuilding and marine engineering according to their technical characteristics. When supplying large-line energy welded steel plates according to this document, the supplier shall conduct a weldability test on the steel plates in accordance with this document. The test can be conducted by the supplier or entrusted to a third party. Before signing a contract with the buyer, the supplier shall provide the weldability test results to the buyer as an attachment to demonstrate that the welding performance of the steel plates meets the requirements. If the buyer has no special requirements, the aforementioned weldability test results remain valid and do not need to be re-tested upon delivery. Upon mutual agreement, additional welding performance tests may be conducted upon delivery. This document specifies the designation method for large-line energy welded steel plates used in shipbuilding and marine engineering, order content, dimensions, shapes, weights, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This document applies to large-line energy welded steel plates wi

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