- 3½ · 4 · 4½ in, square corners
- Plain, ball bearing, heavy weight
- Spring, pivot and continuous hinges
- Non-removable or loose pins
- Satin chrome, stainless, brass, prime
- Matches the universal 4½ in door prep
Range
| Code | Type | Use |
|---|---|---|
| P | Plain bearing | Light and medium frequency doors |
| BB | Standard weight ball bearing (.134 in) | Most commercial doors with closers |
| 4BB | Heavy weight ball bearing (.180 in) | Heavy doors, high frequency, exterior |
| SH | Spring hinge | Self-closing doors without closers |
| PVH | Pivot | Heavy and wide doors |
| CTH | Continuous hinge | Abuse-prone, high-traffic doors |
| NRP / LP | Non-removable pin / loose pin | NRP on out-swinging exterior doors |
How many hinges
Three hinges for doors up to 7'6" (2286 mm), plus one for each additional 2'6" (762 mm) – an 8'0" door takes four. WS doors have a universal 4½ in preparation that takes standard or heavy-weight hinges without changing the door.
المعايير والمتطلبات حسب السوق
المعايير التي تصمم World Steel هذا المنتج وتصنّعه وتوثّقه وفقها – والمتطلبات الهندسية الرئيسية ومتطلبات الأحمال في كل سوق.
الولايات المتحدة
- ANSI/BHMA A156.1Butts and hinges
- NFPA 80 · UL 10CHardware on fire doors
أستراليا / نيوزيلندا
- AS 1905.1Hardware on fire-resistant doorsets
ملخص للاسترشاد فقط – تسري مواصفات المشروع وإصدار المعيار المعتمد والجهة المختصة.
التشطيبات
| التشطيب | المعايير / ملاحظات |
|---|---|
| Finishes | US4 satin brass, US26D satin chrome, US32D satin stainless, prime coat gray or black, powder coat bronze or white |







