On November 7, 2018, the US Department of Commerce announced an anti-dumping and counter-subsidy final ruling on LargeDiameter Weldded Pipes imported from China and India: (1) ruling the dumping rate of Chinese producers and exporters based on unfavorable facts Both were 132.63%; the Indian producers and exporters had a dumping rate of 50.55%. (2) The subsidy rate of China's mandatory responding companies Hefei Zijin Steel Tube Manufacturing Co., Hefei Ziking Steel Pipe, Panyu Chu Kong Steel Pipe Co.Ltd. and other Chinese producers and exporters is 198.49%; India's mandatory responding companies BhushanSteel, WelspunTradingLimited and other Indian producers and exporters subsidy rate Both are 541.15%. The US International Trade Commission (USITC) is expected to finalize the industrial damage on December 20, 2018. The case involves US coordination tariff numbers 7305.11.1030, 7305.11.1060, 7305.11.5000, 7305.12.1030, 7305.12.1060, 7305.12.5000, 7305.19.1030, 7305.19.1060, 7305.19.5000, 7305.31.4000, 7305.31.6010 , 7305.31.6090, 7305.39.1000 and 7305.39.5000 products.

On February 12, 2018, the US Department of Commerce announced a double-counter investigation on large-diameter welded pipes imported from China, India, South Korea and Turkey, and initiated anti-dumping investigations on products imported from Canada and Greece. On March 5, 2018, the US International Trade Commission issued a notice to make a preliminary preliminary ruling on anti-dumping and countervailing industries for large-diameter welded pipes imported from China, India, South Korea and Turkey, as well as products imported from Canada and Greece. Affirmative preliminary ruling on anti-dumping industry damage. On June 20, 2018, the US Department of Commerce announced a countervailing preliminary ruling on large-diameter welded pipes imported from China, India, South Korea and Turkey. On August 21, 2018, the US Department of Commerce announced an anti-dumping preliminary ruling on large-diameter welded pipes imported from China, Canada, Greece, India, South Korea and Turkey. According to US statistics, in 2017, US imports of products from China and India were about $29.2 million and $294.7 million, respectively.