煌商佑鋼鐵工業鋼管，扁通，方通，橢圓形管........ Hot Finished Structural Square Hollow Sections/熱成型結構方型鋼管 Cold Formed Welded Structural Square Hollow Sections/冷成型結構方型鋼管 Hot Finished Structural Rectangular Hollow Sections/熱成型結構矩型鋼管 Cold Formed Welded Structural Rectangular Hollow Sections/冷成型結構矩型鋼管 Hot Finished Structural Circular Hollow Sections/熱成型結構圓型鋼管 Cold Formed Welded Structural Circular Hollow Sections/冷成型結構圓型鋼管 Piling Circular Hollow Sections/打樁鋼管