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See Chinese contents: GB/T 16508.4-2022 GB/T 16508.4-2022: Shell boilers - Part 4: Fabrication, inspection and acceptance
This document specifies the basic requirements for shell boilers in the fabrication process, marking, material cutting and straightening, hot and cold forming, fabrication and assembly of main parts, expansion joints, welding, heat treatment, inspection and testing, coating and packaging, nameplates and the requirements for the exit-factory data. This document is applicable to the fabrication, inspection and acceptance of shell boilers defined in GB/T 16508.1.
