Place Of Origin: China
Types Of: Spiral, Coil, Cylinder, Conical
Material: High-carbon steel (SAE 1065/1070) for superior tensile strength and fatigue resistance.
涂层: 锌 - 尼克尔合金电镀，可耐腐蚀和延长使用寿命。
Use: Ensures smooth, reliable operation of elevator door mechanisms.
应用: Passenger & freight elevators, automatic door systems, industrial lift doors.
| 销售单位 | : | Piece/Pieces |
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