GB/T 35367-2017

This standard specifies the X-ray radiographic testing methods and quality classification criteria for titanium alloy butt weld joints used in submersibles. It is applied in the shipbuilding industry, specifically during the manufacturing and inspection of submersible pressure hulls and structural components to ensure weld integrity under deep-sea conditions. The standard provides a technical basis for detecting internal defects like porosity, cracks, and lack of fusion in titanium welds, enabling consistent quality grading for safety-critical submersible applications.