The failure causes of the finned tubes of an ethylene cracking furnace were analyzed, and some corresponding countermeasures were applied to eliminate the failure possibility.
分析了造成乙烯装置裂解炉翅片管开裂的原因，并在实际生产、维修和设计中采取了相应的对策，消除了再次发生类似问题的可能性。
The ethylene cracking tubes pack-carburized in a laboratory(P tube) and carburized during servicing in a cracking furnace (S tube) are studied.
对实验室固体渗碳（P管）和裂解炉运行渗碳（S管）的乙烯裂解管进行了研究。
The qualified welding procedure has successfully been used for the welding of the P91 steel furnace tubes in three ethylene cracking furnaces.
并依此制定工艺，成功地完成了该钢种在三台乙烯裂解炉中的焊接应用。
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