卧式燃油锅炉以火管结构最为常见,通常是“干背式”和“湿背式”两种,制造时,湿背式的回燃室内,焊接环境较差,尤其在南方的夏天,工人从炉胆中进入封闭的回燃室焊接拉撑杆和内焊缝时,工作条件恶劣。而 Horizontal oil-fired boiler fire tube structure is the most common, usually “dry back ” and “wet back ” two kinds of manufacturing, wet back type back to the combustion chamber, the welding environment is poor, especially in the south In the summer, workers from the furnace into the closed back to the firing chamber welding struts and internal weld seam, poor working conditions. and