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The Manufacturing process utilizes the latest technology and modern equipments for producing high quality ERW Pipes & Tubes. |
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SLITTING. UNCOILING. END SHEARING & WELDING
HR Coils are slitted to predetermined widths for each size of pipe and thickness. 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.
FORMING. WELDING. DEBEADING
The steel strip is made to pass through set of forming and Fin rolls and is moulded in a circular shape. At the welding stage, strip
edges are heated to a plastic stage and fused thus ensuring a perfect, sound weld without addition of any foreign material. Alternating current with high frequency of
4,50,000 cis is directed to heat the strips edges. The outside and inside surface (if needed) is flushed by removing the excess weld through tools.
SIZING, CUTTING END, FACING & BEVELING
The pipe is then passed through set of sizing rolls for achieving dimensional accuracy as per standard requirement. The
pipes are machine cut to the required length by flying saw cutter/disc cutter. The pipes are further processed through end facing for burr removal/bevelling.
Each pipe is hydraulically tested at the required test pressure and then sent for Galvanizing, Threading and Varnishing etc.
PACKING
Finished pipes are bundled in desired number of pieces as per requirement and packed properly for safe storage until delivery.
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