Cangzhou Hongyun Steel Pipe Co., Ltd under the Hongcheng Pipe Industry Group, is a steel pipe, fittings, production, sales and exports for the integration of specialized enterprises. Our main products are: seamless steel pipe (hot-rolled, cold drawn); spiral steel pipe; straight seam steel pipe; thermal expansion pipe; large diameter thick wall steel pipe; alloy steel pipe. Existing company (Di Saier seamless punch) seamless steel pipe production line, the United States Lincoln double submerged arc spiral pipe production line, high-frequency straight seam steel pipe production line, high frequency pushing machine thermal expansion pipe production line