Max. overall dimensions of the panel: L x B = 15 700 x 2800 mm. Min. straight length to the panel end before bending - 450 mm, max. bending angle 133 °.

Configuration of the panel: straight or bent; with/without openings and with/ without supporting tubes. The finished panel can end on the width side by tubes, strips (or strip parts) or by tube at one end & strip at the other end.

MANUFACTURING MATERIALS

1. Tubes (non-oiled): St. 35.8; St. 45.8;15Mo3 according to DIN 17175
   
2. Strips in coils, DIN 1016, NK form A: 15Mo3 according to DIN 17175 - thickness 6 mm - optional thickness 4 mm for tubes' OD=38 mm. The strip width is the difference between the pitch (t) and tubes' OD (d) plus a calibration allowance.
   
3. Welding materials according to the base material (tubes-strip):
   · Flux; Filler wire with diameter of 0,8 mm and 2,0 mm;
   · Electrodes for hand welding.

MACHINING AND WELDING OPERATIONS

1. Machining inside and outside of tube ends and bevelling before tube-to-tube welding.
   
2. Tube-to-tube welding by means of circular welding machine for impulse TIG-welding with shield gas argon. The production line is using the method of so called "continuous tube" that is cut into required lengths.
   
3. Outside shot blasting by EP175-machine to metallic shine.
   
4. Strip straightening & calibration by B100-machine.
   
5. Automatic submerged arc welding of panels with width up to 800 mm by welding machine type Komesma BW 800.
   
6. Automatic submerged arc welding of panels (enlargement) with width up to 2800 mm by Portal-welding machine "P 3000".
   
7. When the panel width is ended by strips in one or both sides - cutting to the proper width by B 3000-gas cutter.
   
8. Panel bending by membrane bending machine type FL1600. Max.
   bending width - 1600 mm.
   
9. Cutting of rectangular openings in the panel by BG-milling machine. The tubes in the opening are face-milled & beveled to angle of 30°, and the strips are cut
   to depth of 8 mm.