carbon steel pipe material: Q195,Q215,Q235,Q345,20#,30#,45# ... Stainless Steel Pipe,Stainless Steel Pipe,seamless stainless steel pipes,welded Stainless Steel Pipe and so on .carbon steel pipe: 1) Material: Q195 ... 'schemical component. 3) Process method:cold rolled hot rolled welded seamless galvanized and so on . 4) Out diameter: 10*10-600 ...