5.5'' Pipe Flange Clamp (Bolt clamp) Material:Hi-Mn13,20#steel,40cr(ASTM5140) Model: ... Putzmeister,Schwing 5.5'' Pipe Flange Clamp (Bolt clamp) Item NoDN 125 One--Bolt ClampTechnologyForgingMatched with148 mm SK FlangeWeight3.8kgsMaterial40crSurface TreatmentElectrostatic Powder ... by high quality material 40Crkinds of types: Quick/snap clamp, bolt clamp, screw clamp, wedge clamp in different sizes 3.5 ...