GB/T 16508.4-2022 Translated English of Chinese Standard (GB/T 16508.4-2022, GBT16508.4-2022): Shell boilers - Part 4: Fabrication, inspection and acceptance
https://www.chinesestandard.net, Apr 14, 2023 - Technology & Engineering - 67 pages
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.
acceptance according assembly boiler shell drum butt joints calculation carried centerline circular circumferential cold forming comply components corrugated cracks cutting cylindrical shell section defects depth descending tube determine deviation difference distance documents edge Edition equipment exceed expansion joint tube fabrication Figure flange flat flue following requirements forming furnace GB/T greater groove H-shaped wing fin head header height hydrostatic test inner diameter inspection installation length less longitudinal lower manufacturer marks material measured meet the following meet the requirements metal method NB/T nominal outer diameter non-destructive testing opened pipe position post-weld heat treatment preheating pressure elements provisions radiographic regulations relevant safety Schematic diagram selected shell boilers sides smoke specified standard steel straight strength surface Table technical temperature thermal tolerance tube end tube hole tube joint tube plate ultrasonic testing wall thickness welded joints welding test piece width