800m-gas pipelines will be substituted with new ones in different parts of the city, deputy chief of Ganja Gas Supply Department Sbhubay Nasibov told the APA's Western bureau. The construction of gas pipelines in Ettarlar, Alibey Huseynzadeh, Abbas Abbaszadeh and Adil Isgenderov streets have already been completed. New gas lines will be constructed in Jafar Jabbarli, Perviz Samadov and Tabrtiz streets soon.