天津钢管有限责任公司因其生产大口径无缝钢管,被人们习惯地称为天津“大无缝”。历经10余年奋斗。公司以高速发展跻身于世界大型无缝钢管企业前列,改写了我国石油套管长期依赖进口的历史。“大无缝”是如何一跃成为世界一流企业,在接受记者采访时,公司总经理孙宁豫坦言道出“真经”,即“大无缝”的三个 Tianjin Steel Pipe Co., Ltd. because of its production of large-caliber seamless steel pipe, it is customary to call Tianjin “big seamless.” After more than 10 years struggle. With the rapid development of the company ranks among the world’s large-scale seamless steel pipe enterprises in the forefront, rewriting our long-term dependence on imports of petroleum casing history. How “Great Seamless” leapt into a world-class enterprise? In an interview with reporters, Sun Ning-yu, the general manager of the company, frankly stated that “the true scriptures”, that is, the “big seamless”