Ống đồng Taisei Japan

6.35×0.61, 10.52×0.61, 12.7×0.61, 6.35×0.71, 10.52×0.71, 12.7×0.71, 15.88×0.71, 6.35×0.81, 10.52×0.81, 12.7×0.81, 15.88×0.81, 19.05×0.81, 15.88×1.0, 19.05×1.0