Tianjin Lefin Industrial Co., Ltd. Is a professional manufacturer of high-frequency straight-seam welded steel pipe which are mainly for the use of low-pressure liquid fluid transportation. Our annual production capacity is more than 200, 000mt. Our subsidiaries- Tianjin Shi Shengqifeng Steel pipe Co., Ltd、 Tianjin Shi Ruifeng Science and Technology Development Co., Ltd and Tianjin Shengqifeng International Trading Co., Ltd. We specialized in producing all kinds of high frequency straight welded tube with diameters ranging from 25mm to 273mm, and square & rectangular pipe from 200*200 to 25*25 which are all well sold in domestic and overseas markets. We also deal with all kinds of hot strip steel and supply processing service. Located in Hengtai Road, Daqiuzhuang town, we are near the Tianjin seaport with convenient transportation. Our industrial zone covers an area of more than 100, 000 square meters. There are more than 200 employees in our company, including 20 experienced engineers and technicians.We manage and product in strict accordance with the ISO9001-2000 international quality system standard. And with excellent equipment craft and inspection technique, we providing high quality products and doing our best to meet our customers&＃039; needs. We hope you enjoy your website visit and find the information helpful. If we can be of assistance, please give us a call or send an e-mail. We&＃039;d love to hear from you.