Guangdong Province-based Chu Kong Petroleum and Natural Gas Steel Pipe Holdings Limited, China's largest manufacturer and exporter of longitudinal welded pipes, has announced that it has received four orders for a total of 82,000 mt of longitudinal welded pipes, valued at an aggregate of RMB 478 million ($78.23 million). The longitudinal welded pipes in question will be supplied to a project in South America, a natural gas project in Central Asia, to another natural gas project in the East China Sea and to the Hong Kong-Zhuhai-Macao bridge project.