... Shape: Round 4)Min. Order: 5 Tons DingRun High Quality Welded Steel Tubes And Pipes1)Business Type: Manufacture and sale2) ... China. Huning highway, Yanjiang highway, Xicheng highway, Xinchang railway run across the beautiful city. Wuxi Shuofang and Changzhou ... They are widely adept in auto, hydraulic machinery, gas spring system, shock absorbers, precision instruments, anchoring machinery and ...