Square amd Rectagular steel pipe (welded and aeamless) LUE Large diameter welded steel pipe The Qianhe Steel and Trade Co.ltd located in Cangzhou,Hebei provnince,China ... of the biggest steel pipe manufactures HeBei XinZhongLian Special Steel Tube Co.,Ltd. At present, with an area of 119,000 square meters,we ... :+86-0317-5296518 +86-0317-5296556FAX:+86-0317-5296556 LUE square steel pipe