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Internal cleanliness protection method in welding process of seamless steel pipe

Writer: admin Time:2019-09-18 03:18:52 Browse:196℃

Internal cleanliness protection during welding of seamless steel pipe:


1. In order to prevent the coating and oxide from entering the pipeline, argon arc welding must be adopted for the welding of all seamless steel pipes. If necessary, the pipeline shall be filled with nitrogen for protection.


2. After the welded junction of seamless steel pipe is completed, the internal conditions shall be inspected and cleaned in time.


3. Clean and polish the leftovers.