Custom Sectional Door Panel Components
One section of a sectional door is a formed skin, an end piece at each side, and reinforcement channels behind the hardware; these are the sectional door panel components K-Display forms in aluminum, carbon steel, galvanized, or galvanneal sheet.
Sectional door panels and channels
We form the metal of a door section from aluminum, carbon steel, galvanized, or galvanneal sheet: the skin with its returned edges, the end pieces at each side, and the reinforcement channels behind the hardware locations. Carbon steel channels are spot welded to carbon steel skins, self-clinching inserts are installed, the visible face is powder coated, and the parts are packed with separators.
Loose brackets and plates are garage door components, and brackets and plates joined into one unit are door subassemblies.
The end piece's orange flange is the face the door hardware meets. The reinforcement channel is formed apart from the skin and spot welded on behind the hardware location.
Sectional door panel parts we make
- Formed skins
- Folded faces with returned edges and the openings the section needs.
- End pieces
- Closures at each side of the section, cut with the strut and hinge attachment holes for the door model.
- Reinforcement channels
- Formed channels behind each hardware location, spot welded to a carbon steel skin.
Why a section gaps, bows, or shows a mark
- Returned edges
- Adjoining sections meet along the returned edge. A return formed a little shallow leaves a gap along the full width of the section.
- Panel flatness
- A long, thin skin bows when welding or cure heat reaches it unevenly. A bowed skin will not sit flat on its channel and shows as a wave on the finished door.
- Visible face
- The outside face is the one the door buyer sees. Every hanging point on a coated part leaves a contact mark, and a mark or scratch on that face is a reject.
Welds made while the joint is open
A return flange can block an electrode, so each channel is welded on while both sides of the joint are still open.
Cut the blanks and fold
We laser cut each blank and form the skins, end pieces, and channels on the press brake.
Weld and fit inserts
We spot weld each carbon steel channel to its skin, then install the self-clinching inserts.
Mask, coat, and pack
We mask the insert threads, powder coat the visible face, and pack the panels.
Check what fits inside the panel edge
An end channel can match the outside panel thickness while its returns occupy space needed by the infill or inner backing. A cross-section through the assembled edge shows where each layer sits and which surfaces the formed part actually meets.
In this insulated example, the channel returns sit between the skins and infill. Review their depth and bend radii together with those adjoining layers; a change to one part can alter the fit of the others. Use the approved assembly section to define that relationship.
The channel's returns occupy space between the skins and infill. Its inside profile therefore has to fit the layer assembly, not just match the panel's overall thickness at the outer edge.
What to send for a sectional door panel quote
- Section cross-section
- Skin, channel, and end piece profiles with material and thickness.
- Finish and visible face
- Color, gloss, which face shows, and where parts may hang.
- Insert list
- Insert part numbers, sizes, and positions.
- Run
- Section lengths, quantity per size, and repeat demand.
- Packing
- Rack or pallet method.