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How To Choose A Steel Door Frame Design?
2019/11/29

Steel door frame also can be called steel door rail, steel door frames are either brake formed or roll formed.

As you know, the variability in door frames closely matches the variability in doors. The roughly 30% “odd” to 70% “standard” also applies. This makes roll forming “standard” door frame vertical jambs quite appealing. Door hinge and lock strike cutouts can either be pre-punched with individual “blanks” sent through the roll forming machine or pre-punch / post-punch processes can be engineered to punch continuously from a coil of steel.

Door frame roll forming machines can also be adjusted to handle varying gauges. "Gauge" refers to the metal's thickness and weight. Some door frames are 18 gauge (thinner), while some are 16, and so on. Their specs for durability usually determines what gauge is used. Heavier gauges would be for high-use or hurricane-proof applications.

The frame “header” is the horizontal top piece that can be roll formed too, but it ’s usually brake formed because it ’s shorter and easier to handle that way.

In the end, when you receive the frames you will have two options:

The first is to assemble the three pieces in the field (a “knocked-down” or “KD” frame)

The second is to have the vertical jambs welded to the header and receive the unit in one piece.

Roll Forming Machine Engineering Knowledge

How To Choose A Steel Door Frame Design?