以下为Spiral pipe, spiral pipe plant telephone 13323277281详细参数信息，Spiral pipe, spiral pipe plant telephone 13323277281图片由河北天元钢管制造有限公司生产厂家张延东天元钢管提供，Spiral pipe, spiral pipe plant telephone 13323277281

Bridge structure with spiral steel pipe that is dedicated to the steel bridge pillars of the project. The use of steel bridge features and performance requirements are: (2) most of the bridge structure by cold forming and welding process, therefore, requires sensitivity to cold after the time. Requested the strength and toughness of the weld area of