A few days ago, the first batch of 330 spiral seam submerged arc welded pipes weighing 1,520 tons and worth 2.79 million US dollars produced by Jiangsu Tongyu Steel Pipe Group Co. Central Asia gas pipeline project under construction. It is understood that Jiangsu Tongyu Steel Pipe Group Co., Ltd. is one of the nine domestic enterprises participating in the project. The Central Asia Natural Gas Pipeline Project, also known as the Central Asia Pipeline, is the general name for the pipelines that introduce natural gas from Central Asian countries such as Turkmenistan and Kazakhstan. The gas pipeline has a design length of more than 3,000 kilometers.