Girth weldability and welding process of Baosteel X80 UOE linepipes |
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Affiliation: | LIU Shuo Welding & Surface Technology Division,Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China |
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Abstract: | An analysis of the girth weldability of Baosteel X80 UOE (U-ing-O-ing-Expanding) linepipes was conducted using manual shielded metal arc welding (SMAW) and semiautomatic self-shielded flux cored wire arc welding (FCAW).A technical specification for the optimum quality of a girth welding joint was obtained through a large amount of testing.According to the requirements of America Petroleum Institute(API) standard 1104 and the standards of the 2nd West-East natural gas transmission pipeline project,the mechanical properties of a girth welding joint were estimated.In addition,the effect of the girth welding procedure specifications and the consumable’s suitability on the impact toughness of the girth welding joint was discussed. |
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Keywords: | X80 UOE linepipe girth weld SMAW FCAW mechanical performance |
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