Steel Pipe Co., Ltd. Cangzhou Zhonghui (www.zhonghuigg.com) Professional Marketing seamless steel pipe, large diameter seamless steel pipe, hot expanded seamless steel pipe, straight seam steel pipe, corrosion steel pipe, pipe insulation, piling pipe, sewage pipe, water pipe and 16 manganese steel and other products, first-class product quality, cost-effective. In the Department of seamless steel pipe and other products are widely sold throughout the country and exported to Australia, the United States, Japan and other countries, the majority of users of high praise and favor.