... most competitive price 2. produce you need 3. good quality 4.materials:Carbon Steel ,Alloy Steel, Stainless Stee We ... .We are engaged in Structure Tubes, Fluid Pipes, Boiler Pipes, High Pressure , Chemical Fertilizer , Steel Plat ,Steel Coil , Steel ... more than 100,000 tons per year and 7 seamless production lines with ability of more than 400,000 ... cooperate in the future.Have a nice day! seamless elbow