This standard specifies the type, basic parameters, main dimensions and technical requirements of glass-lined manholes. This standard applies to glass-lined manholes with nominal pressures less than or equal to 1.0MPa and design temperatures higher than -20°C and lower than or equal to 200°C.
HG/T 2055.1-2006 Referenced Document
GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications