At present, there are more than 2,000 welded steel pipe companies in China, and the top 11 major welded steel pipe companies have a combined production capacity of more than 12.15 million tons, accounting for about 1/5 of the country's total welded steel pipe production capacity, and the industry concentration is low. In recent years, the technical level of my country's welded steel pipe production equipment has been further improved. At present, the production units that account for more than 50% of my country's annual output of welded steel pipes are of the international advanced level, and some have reached the international leading level. The quality of welded steel pipe products has also been further improved, which has basically been able to meet domestic demand. In terms of the specific competition pattern, the domestic welded steel pipe industry has formed a competition pattern in which state-owned enterprises in the petroleum and petrochemical.