... PipesSteel gradeQ195, Q215, Q235, Q345,ST37,ST52Outside Diament15*15-600*600mmThickness0.5-40mmLength5.8m,6m or as per customer's ... PipesSteel gradeQ195, Q215, Q235, Q345,ST37,ST52Outside Diament15*15-600*600mmThickness0.5-40mmLength5.8m,6m or as per customer's ... Asia,Eastern Europe,Western EuropeCompany informationWe, Cangzhou Leading Fly Steel Pipe CO., Ltd. We believe our quality and price of the ...