Early or late, Mingzhu Company has introduced eight extruding product lines reached international advanced level. The product lines have been equipped with online test system for the pipe wall thickness. The real time inspection and control for the wall thickness guaranteed the quality's stability. In addition to more than 1,300,000 meters pipes with all specifications, the gas pipes production capacity has reached 50,000 tons per year. The output and sale volume take the first position at domestic in present. í(Product Specification: Nominal (outside diameter): 25-630mm Pressure Grades: SDR11, SDR17.6 Appearance: Yellow pipe, black pipe with yellow stripes