哈—依煤气长输管线弯头裂纹处理技术探讨

Elbow Crack Treatment Technique in Ha-Yi Gas Transmission Pipeline

分析了哈—依 (哈尔滨—依兰 )煤气长输管线弯头裂纹产生的原因及裂纹的特点 ,同时介绍了处理弯头裂纹的两种方法 :降压补焊法和铅板止气、夹套封焊法的操作工艺 ,工作原理 。

Analyzed the elbow carck reason and its feature.Introduced two methods for treatment of cracks:lower pressure mend welding and lead plate stopping gas leakage sleeve seal welding.