结合某炼油工程催化重整装置四合一炉炉管焊接施工，对炉管用耐热钢的焊接性进行分析和试验；
The weldability of heat-resistant steel was analyzed and tested for welding pipes of 4 in 1catalytic reforming furnace of an oil refining project.
发现炉管损伤在4.5级及以上时，炉管焊接修复困难，而在此损伤级别以下，炉管一般均能较好地修复。
It was found that repair of furnace tubes is difficult as damage rates are 4.5 or above. When damage rates are below 4.5, repair of furnace tubes is feasible.
对焊接、检验人员及炉管和焊材必须有专门的要求，应建立相应的施焊管理制度。
The persons of welding and examining, the furnace pipe and the welding material should accorded with the special demands, and the management system should be set up.
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