Jiangsu Changjing Steel Pipe Co., Ltd.by taking Changqiang, the producer of iron, steel and tube as the raw material supplier, based on various seamless steel tubes fabricated by manufacturers like Jiangyin Seamless Steel Tube Factory, Jiangyin Metal Tube Making Factory, Jiangyin Changgang Pipe Making Co., Ltd., and Jiangyin Changjiang Oil Special Pipe Manufacture Co., Ltd.