GB 15368-1994 Portable foam fire extinguishers

GB 4351.1-2005 Portable fire extinguishers—Part 1:Performance and construction

ZB C84 007 GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 3323-1987 Methods for radiographic inspection and classification of radiographs for fusion welded butt joints in steel GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials GB/T 3323.1-2019 Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film GB/T 3323.2-2019 Non-destructive testing of welds—Radiographic testing—Part 2:X-and gamma-ray techniques with digital detectors GB/T 3864-1996 Industrial nitrogen GB/T 3864-2008 Industrial nitrogen GB 4351-1997 General specifications for portable fire extinguishers GB 4351-2023 Portable fire extinguishers GB 4351.1-2005 Portable fire extinguishers—Part 1:Performance and construction GB 4351.2-2005 Portable fire extinguishers—Part 2:Requirements for seamless steel cylinders of portable carbon dioxide fire extinguishers GB/T 4351.3-2005 Portable fire extinguishers—Part 3:Regulations GB 12515-1990 Portable dry powder fire extinguishers(stored-pressure) GN 11-1982 Fire product model numbering method GB/T 3864-2025 Industrial nitrogen