BigPatents India

A process of manufacturing steel drum having internal reinforcing of seam comprises steps of: a) making steel cylindrical open end drum body by resistance welding longitudinally with overlap joint; b) making dished end cover with the flange all around one for top cover with filling openings and another bottom cover without any openings; c) making of circular reinforcing Ring; d) placing of said circular Reinforcing Ring over dished end flange from inside; e) placing the said dished end provided with circular Reinforcing Ring over the cylindrical open end drum body where dished end flange overlap the said circular reinforcing Ring and drum body flange; and f) folding the said flanges and circular Reinforcing Ring together with Rubber or any other sealing compound between the gap together to form Reinforced and stronger double seam or triple / spiral seam. Drawing: 7 Sheets. Total Pages: 14 Fig. Nil