Hi dear renowned sir/madam,I hope you are going well. I'm Sigrid Sun from Tianjin Tewoo Group(metal department), which is the government-based group which manufactures and exports steel products with 18 production lines for over 30 years in the field of steel carbon pipes including round&square&rectangular erw pipes, pre-galvanized and hot-dipped galvanized ones, seamless pipes as well as stainless pipes with official certification. Our annual exporting amount can be up to 100,000 tons to South America, Middle East, Southern Asia, Europe, Canada etc.You can send me a reply for specification, availability or for any other questions you may have. Certainly free samples are available. I am confident to provide you our best advantage. Pls don't hesitate to contact me via email/whatsapp/website shown below. We wish to be your valuable resource and look forward to hearing from you soon.Best regards