This standard specifies the classification and requirements for marine cast steel flanges (hereinafter referred to as flanges) used on ship piping accessories and mechanical equipment bodies. This standard applies to marine cast steel flanges with nominal pressures of PN6~PN64.
CB/T 4326-2013 Referenced Document
CB/T 4196 Marine pipe flanges-connection dimensions and mating face
GB/T 11352-1989 Carbon steel castings for general engineering purposes
GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications