304 Stainless Steel Flag Weld Hinge (Removable Pin, 3-6 Inch)
Key points
- Door leaf lifts off frame for fast maintenance
- 304 stainless steel - rust resistant in humid climates
- Welds directly to steel frames for tamper-proof fixing
- 3-6 inch sizes cover fire doors to industrial panels
- Weld-on design suits fire doors and industrial enclosures
- Precise pin alignment keeps heavy steel doors swinging freely without sag
- Removable-pin weld-on construction helps metal-door fabricators speed maintenance while keeping a permanent frame-side fixing
- Available in 3 to 6 inch sizes so fabricators can match hinge length to door weight on the same steel frame
- Plant rooms and switchgear enclosures can have doors lifted off for servicing while the frame-side leaf stays welded in place
- Holding a few spare hinges means a damaged one can be replaced during the same maintenance visit instead of leaving a fire door out of service for a week
- Fabricators can weld the hinge to a gate frame, paint and transport it without the leaf, then hang the door on site
- A door that lifts off its pin leaves the welded frame side untouched, so a repair needs no realignment afterwards
| Material | 304 Stainless Steel |
| Type | Flag / Weld-On Removable Hinge |
| Size | 3, 4, 5, 6 Inch Options |
| Finish | Brushed / Polished |
| Application | Fire Doors, Steel Doors, Industrial Enclosures |
| MOQ | 1 pc |
| MOQ | 1 pc |
| Price basis | FOB China |
| Payment | T/T bank transfer |
| Packing | Export carton with moisture-resistant packing |
| Sample | Available before a bulk order |
| Lead time | Confirmed in your quotation |
Product detail
Welded flag hinge machined from 304 stainless steel for fire doors, steel doors and industrial enclosures where regular screws cannot hold. The flag design lets the door leaf lift off its frame for quick removal, making maintenance, cleaning and door replacement simple without removing the frame plate. Available in 3, 4, 5 and 6 inch sizes, the hinge welds directly to steel frames and door edges for a permanent, tamper-resistant fix. The smooth stainless surface resists rust in humid coastal and high-moisture settings, and the precise pin alignment keeps heavy doors swinging freely without sag. Popular with metal door fabricators, fire-door installers, equipment cabinet makers and hardware importers who supply commercial and industrial projects. Factory-direct supply supports bulk packing and custom size runs for distributors and OEM programs, and the weld-on format suits both new builds and retrofits of steel doors and gates. Exporters can plan carton counts around the four lengths offered so one outer box carries a balanced mix of sizes, which makes a consolidated pallet easier to build and less likely to sit half-filled at the loading dock. Because each hinge is small and light, mixed pallets that combine it with heavier door hardware can be balanced for freight without adding protective packaging that eats into container volume. Equipment builders can specify the removable pin so end users can lift a guard or access door for cleaning without tools, which helps meet hygiene routines in food and process plants. A hinge for a steel fire door or an industrial enclosure, where the removable pin lets the leaf be lifted off for service.
