Architecture Supplies
(USA) Steelcraft by Allegion
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About
- Steelcraft hollow metal doors and frames, made in the USA in galvannealed and stainless steel, in flush, embossed and vision-lite configurations. Cores range from honeycomb and polystyrene to mineral board for fire-rated openings.
Application
Specified for corridors, stairwells, plant rooms, service entries and back-of-house openings in schools, hospitals, airports and commercial buildings. Frames are supplied in knock-down or welded form and prepared at the factory for the exact hinge, lock and closer that will be fitted, so hardware preparation on site is eliminated.
Standards & Reference 6 cited
ANSI/SDI A250.8
The recommended specification for standard steel doors and frames: gauge, construction and grade. Often still called SDI-100.
ANSI/SDI A250.4
The physical endurance test for steel doors and frames: the cycle count behind a door's stated grade.
NFPA 80
Not a test but a compliance standard: how fire doors are installed, inspected and maintained, including the annual inspection and the requirement that every fire door self-closes and positively latches.
UL 10C
The positive pressure fire test for door assemblies. Positive pressure drives hot gas through any gap between door and frame, which makes it the more demanding test and the one North American codes now call for.
ANSI/BHMA A156 series
The American builders hardware standards, each part covering one product family and grading it Grade 1 to 3 by cycle testing.
ASTM A653
Hot-dip zinc-coated (galvanized) steel sheet, with the coating designations that set corrosion life.
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