Hot Products
China Hot Coil Springs Factory - Heavy-Duty Springs Suppliers for Harsh Environments and Industrial Applications
📋 Product Parameters
🔩
Available Materials:
Carbon steel (SWC), music wire / piano wire (SWP), 60Si2Mn, 55CrSi, and more (see table below).
Carbon steel (SWC), music wire / piano wire (SWP), 60Si2Mn, 55CrSi, and more (see table below).
| JIS (Japan) | SAE (USA) |
|---|---|
| SUP 9~9A | 5155~5160 |
| SUP 10 | — |
| SUP 11A | 51B60 |
| SUP 12 | 9254 |
⚠️ For the design and materials of springs, please consult with our technical team. The following details are required when placing an order.
| 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 |
🔧 Equipment Details
🏭 Application
❑
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.
❓ Frequently Asked Questions
Q
What materials are available for hot coil springs?
We offer a wide range of materials including carbon steel (SWC), music wire / piano wire (SWP), 60Si2Mn, and 55CrSi. We also supply springs made from JIS-standard materials such as SUP 9~9A, SUP 10, SUP 11A, and SUP 12, which correspond to SAE standards used in the USA. Please consult our technical team for the most suitable material for your application.
Q
What wire diameter range can you supply for hot coiled compression springs?
We can supply hot coiled compression springs with wire diameters ranging from 20.00mm up to 60.00mm. Custom sizes outside this range may be available upon consultation with our engineering team.
Q
What surface finishing options are available for hot coil springs?
We offer multiple surface finishing options to suit your requirements, including enamel coating, powder coating (available in a wide variety of colors), and phosphate treatment. Shot-peening is also carried out to improve fatigue resistance and surface strength.
Q
What information is required when placing an order for custom springs?
When placing an order, customers should provide key specifications including: material, wire diameter (d), mean diameter (Dm), outer or inner diameter, active and total turns, direction of winding, free height (Ho), spring rate (K), load conditions, type of ends, hardness requirements, surface finish, and working environment details such as temperature and humidity. Our team is available to assist with specifications if needed.
Q
What industries are hot coil springs typically used in?
Hot coil springs are widely used across industries including automotive, railway, construction, and heavy machinery. Their excellent resistance to fatigue, corrosion, and high-stress conditions makes them ideal for demanding environments that require high load-bearing capacity, tensile strength, and long service life.
Q
What quality standards do your hot coil springs comply with?
Our hot coil springs comply with Korean standards KS B2402 and KS B2403, as well as JIS (Japanese Industrial Standards) and SAE (Society of Automotive Engineers) material equivalents. All springs are manufactured with precise engineering to ensure consistent performance and reliability in demanding applications.