• Range
• Technical
• Quality Control and Testing

1. Range

Specifications	Fin Height	Fin Depth	Fin Pitch	Inner Gap	Sheet Thickness
Value	300mm to 1300mm	50mm to 400mm	40 mm & above	6mm or 8mm	1.0mm to 1.5mm

Embossing and spot welding can be done for panel with Fin Height ≥700mm and Fin Depth ≥ 200mm on customer request.



Edge bending can also be done as per customer specifications.

Upward Bend	Downward Bend	Z Bend

FIN FORMING PROCESS :
Fin bending of corrugated panel is done using fully automated machine. The machine has high accuracy while manufacturing of the fin. Depth, Pitch, Inner Gap and Count are strictly monitored by the machine. Embossing on the fins is also done at this stage. Customer can opt for single emboss or double emboss depending on the fin depth.

SPOT WELDING PROCESS
In order to provide strengthening to the fins of panel, GRPL offer provision of spot welding on the embossing of fins. GRPL has fully automatic spot welding machine for welding as per different parameters like counts, height and sheet thickness. Spot welding can be done on single as well as double embossed panel.

FIN SEAM WELDING
Seam of the corrugated panels are welded using fully automated Fin Welding Machine. The machine is fitted with OTC make 350A MIG welding machine for high quality flawless welding. The machine is designed such that the stiffening rod also gets welded to the panel simultaneously.

PANEL DIMENSIONAL CHECK

The dimensional check of the panel is done to check with the customer’s parameter. The panel is checked for its Fin Height, Fin depth, Pitch, Count, Diagonals, Inner gap & embossing Height. Since GRPL uses high accuracy machines, there is hardly any deviation from the set parameters.

LEAKAGE TESTING
The panel is checked for leakage at fins seam weld, stiffening rod weld and spot weld to avoid any type of problem in future. The panel undergoes NDT to check for its leakage.