Carbon Steel Pipe Product Descriptoin Since many years ago, YOUFA factory has provided the global building and construction industry with various varieties of structural steel, including a large selection of Mild Steel Steel Hollow Sections in the shapes of square, rectangular, and round. Our mild steel tube, square, and rectangular box section products are available in a range of grades, widths, andfinishes. Outer DiameterSquare pipe: 20*20mm~400*400mm Rectangular pipe: 20*40mm~300*500mm Wall Thickness0.8~20mm Length3-12M according to client requirement StandardHollow section: ASTM A500, EN10219, EN10210, JIS3466, GB/T 6728 MaterialGr.A, Gr.B, Gr.C, S235, S275, S355, A36, SS400, Q195, Q235, Q345 Application Construction / building materials steel pipe Scaffolding steel pipe Fence post steel pipe Fire protection steel pipe / fire sprinkler steel pipe Original Equipment Manufacturers, Or OEMs FAQ Q: Can provide OEM/ODM service? A: Yes. We support OEM/ODM service. Q: How is your Payment Term? A: One is 30% deposit by TT before production and 70% balance against copy of B/L; the other is Irrevocable L/C 100% at sight. Q: Can you provide sample? A: Yes, for regular sizes sample is free but buyer need to pay freight cost. Q: How long is your delivery time? A: 5 -7 days from stocks; if the special size from new production, delivery 20-30 days.Carbon Steel Pipe website:http://www.youfaconstruction.com/carbon-steel-pipe/