不锈钢防火铰链，不锈钢门铰，UL 认证合页
材质：不锈钢304为主，不锈钢316，以及其他。
表面：砂光，精光，电镀均可
尺寸：
| S/N. | Model No. | Sizes
Height (Inch) x Open Width (Inch) x Thickness (mm) |
| 1 | GY-403030 | 4.0" x 3.0" x 3.0mm |
| 2 | GY-403530 | 4.0" x 3.5" x 3.0mm |
| 3 | GY-404030 | 4.0" x 4.0" x 3.0mm |
| 4 | GY-404034 | 4.0" x 4.0" x 3.4mm |
| 5 | GY-454030 | 4.5" x 4.0" x 3.0mm |
| 6 | GY-454034 | 4.5" x 4.0" x 3.4mm |
| 7 | GY-454046 | 4.5" x 4.0" x 4.6mm |
| 8 | GY-454530 | 4.5" x 4.5" x 3.0mm |
| 9 | GY-454534 | 4.5" x 4.5" x 3.4mm |
| 10 | GY-454546 | 4.5" x 4.5" x 4.6mm |
| 11 | GY-503030 | 5.0" x 3.0" x 3.0mm |
| 12 | GY-503530 | 5.0" x 3.5" x 3.0mm |
| 13 | GY-504030 | 5.0" x 4.0" x 3.0mm |
| 14 | GY-504034 | 5.0" x 4.0" x 3.4mm |
| 15 | GY-504534 | 5.0" x 4.5" x 3.4mm |
| 16 | GY-504546 | 5.0" x 4.5" x 4.6mm |
| 17 | GY-505046 | 5.0" x 5.0" x 4.6mm |
| 18 | GY-504048 | 5.0" x 4.0" x 4.8mm |
| 19 | GY-504548 | 5.0" x 4.5" x 4.8mm |
| 20 | GY-604540 | 6.0" x 4.5" x 4.0mm |
| 21 | GY-EFF | 8.0" x 5.0" x 5.0mm |
标配：木牙螺丝，也可以配机丝
