In 1990 Xinyue company independently designed and used hot dip blow galvanizing line for expressway guard bar and pole, as a pioneer project in China. Thanks to continuous improving in the past over ten years and use in manygalvanizing factories, now the product is still in the leading position in China. The semi- automatic or full-automatic production lines can be made according customer’s requirements. The guiding staff inside blowing system of steel pole line can decrease the zinc consumption considerably. Our company has popularized this technology to several hundred steel pipe hot galvanizing enterprises and obtained notable social benefits.