In the first week after the Spring Festival in 2019, the social inventory of industrial welded pipes in 29 key cities across the country increased by 44.64%. By comparing with the inventory after the Spring Festival last year, we found that the incremental inventory accumulation in the circulation link during this year's Spring Festival has increased compared with last year, but the total inventory of stainless - steel industrial welded pipes in the first week after the Spring Festival is slightly lower than that of last year.