| Company Name | City |
|---|
| Hengyang Valin MPM Co., Ltd | Hengyang |
| Hengyang Valin Steel Tube Co., Ltd | Hengyang |
| Handan Precise Seamless Steel Pipes Co., Ltd | Handan |
| Jiangsu Huacheng Industry Group Co., Ltd | Zhangjiagang |
| Jiangyin Metal Tube Making Factory | Jiangyin |
| Jiangyin City Seamless Steel Tube Factory | Jiangyin |
| Pangang Group Chengdu Iron & Steel Co., Ltd | Chengdu |
| Shenyang Xinda Co., Ltd | Shenyang |
| Suzhou Seamless Steel Tube Works | Suzhou |
| Tianjin Pipe (Group) Corporation (TPCO) | Tianjin |
| Wuxi Dexin Steel Tube Co., Ltd | Wuxi |
| Wuxi Dongwu Pipe Industry Co., Ltd | Wuxi |
| Wuxi Seamless Oil Pipe Co., Ltd | Wuxi |
| Zhangjiagang City Yiyang Pipe Producing Co., Ltd | Zhangjiagang |
| Zhangjiagang Yichen Steel Tube Co., Ltd | Zhangjiagang |