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GUANGZHOU SHI GUANGWEIYOULIANG TRADING CO., LTD
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steel rolling shutter spring

GUANGZHOU SHI GUANGWEIYOULIANG TRADING CO., LTD

steel rolling shutter spring

Price : FOB USD800-1500 per tons
Payment Terms : Telegraphic Transfer (T/T), L/C
Sample Price : Depending on the quality demanded
Delivery Time : within 2 working days(depends on your quantity)
Place of Origin : China
Pack. & Delivery : Each coil with anti-rust paper wrapped and plastic film with material pallet and
Category : Specialty Clocks
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steel rolling shutter spring :
1.Material grade: CK50/ CK60/ CK67/ CK70/ CK75, C75Cr1, 50CrV4, 60Si2Mn.
2.Thickness: 0.15mm- 2.5mm
3.Width: 8mm-600mm
4.Edge fo steel: slit, round, square.
5.Surface treatment: heat treatments.
6.Standard of reference: GB, DIN, JIS.
7.Finshed surface: Polished , blue, yellow, white, gery-blue, black, bright, nature.
8.Tolerance: Thickness+ / -0. 01 mm max, width: + / -0.05mm max
9.useful: material used in constant force spring, clock main spring, toy spring , power spring, steel for clock spring, power springs, recliner spring, feeler gauges, doctor blades
10.Hardness: 21-28HRC for cold rolled process, 29-55HRC for hardened and tempered process, below 20Hrc for annealed process.
11.Packing: Each coil with anti-rust paper wrapped and plastic film with material pallet and put into 20ft container or standard sea worthy.
12.Good flatness, and hardness uniform

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