Design temperature: -110, material: S30408

1. Relevant requirements are specified in HG/T20585. 2. It should be determined whether the studs made of S30408 have been subjected to calculations, given that their allowable stress is relatively low

Based on the provided information, the design temperature is -110°C and the material is S30408. For a design temperature of -110°C, generally there are no special requirements. Regarding the two standards in the technical requirements: 1. The flux content in the welding rod, or the diffused hydrogen content in the deposited metal, must be retested. This means that the welding rod must be tested for moisture or hydrogen content before use to ensure it meets the requirements. The specific testing standards and methods need to be determined based on the actual circumstances and relevant regulations. 2. PT testing is performed on the studs (M24) after rough machining and after shaping. This requires PT (penetrant testing) to be carried out after the rough machining and shaping of the studs. PT testing can be used to detect defects such as cracks and holes on metal surfaces. The specific testing methods and standards need to be determined based on the actual circumstances and relevant regulations. Please note that the above answers are based on the provided information and standard practices, and do not cover all possible scenarios. The specific requirements and standards need to be determined based on the actual project, design requirements, and relevant regulations. It is recommended to consult relevant engineers or professionals for accurate information. .