Heavy-Duty Hot Coil Springs Supplier in China – Durable Springs for Harsh Environments | Factory Quality
| JIS (Japan) | SAE (USA) |
| SUP 9~9A | 5155~5160 |
| SUP 10 | — |
| SUP 11A | 51B60 |
| SUP 12 | 9254 |
| Item | Labeling Requirements | Remark |
|---|---|---|
Material |
|
Calculation based on manufacturer standards unless otherwise specified |
Wire Dia (d) |
mm |
|
Mean Dia (Dm) |
mm |
Selection between DE or DI |
Out Dia (Do) |
mm |
DE tolerance management according to assembly conditions |
Inside Dia (Di) |
mm |
DE tolerance management according to assembly conditions |
Active Turn (Na) |
Coil |
As per the design standard of manufacturer |
Total Turn (Nt) |
Coil |
As per the design standard of manufacturer |
Direction of Wind |
Left · Right |
As per client's request |
Free Height (Ho) |
mm |
Spring for load management and reference |
Spring Rate (K) |
kgf / mm |
|
Load Condition |
mm, kgf |
As per client's request |
Type of Ends |
Butt end, Taper |
As per client's request |
Hardness |
HB 388 ~ 514 |
Specified by manufacturer |
Carry Out |
Shot-peening |
|
Finish |
Enamel, Powder, Phosphate |
As per client's request |
Application and Working Conditions |
Labelling requirement by client |
Application, Working Temperature, Humidity and Working Environment |
Other Standards |
KS B2402, KS B2403 |
|
They offer excellent resistance to fatigue, corrosion, and high-stress applications, making them ideal for industries such as automotive, railway, construction, and heavy machinery. With precise engineering, hot coil springs provide consistent performance, high tensile strength, and long service life. Their robust construction ensures reliability in demanding environments, making them a preferred choice for applications requiring superior load-bearing capacity and resilience.
We can supply hot coiled compression springs from 20.00mm up to 60.00mm wire sizes with surface finishing to suit your requirements. Many hot coiled compression springs are supplied with either a painted or powder coated finish, utilizing a wide variety of colors.