Φ Φ 10MM to 19MM small diameter pipe wall thickness 0.3MM to 1.5MM. Φ medium pipe wall thickness 0.5MM to 2.5MM 19MM to 63MM, a black annealing process management. Bright China retire management, hot-dip galvanizing thin tube, Chilled Bright management, and various deformation, special pipe. Another cold product sales, which retreated, annealed strip. |