Manufacturing Process
The Process utilizes the latest technology and modern equipments for producing high quality ERW pipes.

1. Slitting HR Coils are slitted to predetermined widths for each size of pipe and thickness. 2. Uncoiling, end shearing and welding Slitted coil is uncoiled at the entry of ERW mill and the ends are sheared and welded one after another to make it a single endless strip. 3. Forming Slitted coils are initially formed into U shape and then into a cylindrical shape with open edges using a series of forming rolls.

4. Welding The open edges are heated to the forging temperature through high frequency low voltage high current and press welded by forge rolls making perfect and strong butt weld without filler materials. 5. Debeading Weld flash on top and inside (if needed) is trimmed out through carbide tools

6. Seam Annealing Whenever required, welding portion and heat affected zone is put to normalising with medium frequency normaliser and then cooled down in air cooling bed. 7. Sizing After water quenching, slight reduction is applied to pipes with sizing rolls to give them desired accurate outside diameter. 8. Cutting Pipes are cut to required lengths by flying cut off disc/saw cutter.

9. Facing and Beveling The pipe ends are faced and beveled by the end facer. All the processes are continuous with auto arrangements. These plain ended tubes go for further processing as per the customer need like galvanizing, threading, black varnishing etc