For details, please refer to Emission Standard of Boiler Air Pollutants and Code for Design of Chimneys (GB5005 1-2002). Pdf (According to the requirements of the documents of the Standards and Norms Department of the Ministry of Construction and [(99) Jian Biao Bian Zi No.20], the chimney design approved by the State Planning Commission 1983 is completed by Baotou Steel Design and Research Institute in conjunction with relevant contractors. ) There are technical standards on it. (This can only be found after downloading. )