The results show that the leak detection steam may condense in the interlayer clearances,which would cause alkaline medium concentration at the heavy weld.

 
  • 深环焊缝部位在碱性环境和局部较高应力下萌生裂纹并扩展,是导致多层包扎尿素合成塔应力腐蚀开裂的原因。
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