干燥条件下用烟道系统CE认证标准-EN 1457-1:2012
EN 1457-1:2012 Chimneys. Clay/ceramic flue liners. Flue liners operating under dry conditions. Requirements and test methods
EN 1457-1:2012 烟囱.粘土陶瓷烟道衬块.在干燥条件下工作的烟道衬块.要求和试验方法
干燥条件下用烟道系统CE认证标准-EN 1457-1:2012
EN 1457-1:2012 Chimneys. Clay/ceramic flue liners. Flue liners operating under dry conditions. Requirements and test methods
EN 1457-1:2012 烟囱.粘土陶瓷烟道衬块.在干燥条件下工作的烟道衬块.要求和试验方法