GB/T 31821-2015

GB/Z 28597-2012 Lifts and escalators subject to seismic conditions - Compilation report GB/Z 28598-2012 Study of the use of lifts for evacuation during an emergency GB/Z 31822-2015 Study report on the safety requirements of public service escalators and moving walks GB/Z 35850.3-2021 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 3: Life cycle guideline for programmable electronic systems related to PESSRAL and PESSRAE GB/T 7636-1987 Standard on design of biogas pipelines for peasant household GB/T 7637-1987 Operation rules of construction and installation of biogas pipelines for peasant household GB/T 11977-1989 Bathrooms in housing functions and series of dimensions GB/T 12712-1991 The requirements for supervision of recovery of condensate from steam heating system and technique ofautomatic steam traps