Rolling door spring steel strip Description
1. Material: 65Mn grade
2. Finished: hot tempered and hardened, black or blue finished
3. Specification: 1) thickness: 1.2, 1.3, 1.4,
2) width: 40, 45 ,50, 55,
3) length: 3, 3.5, 4, 4.5, 5, 5.5,
4. Packing: oiled, plastic film, carton, iron pallet
10pcs/carton carton size: 33x17x
5. Matching products: Spring box, rolling door lock
Blue steel strip