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1. Product type: extension springs
2. Wire diameter: 0.1mm~20mm
3. Material:carbon steel, stainless steel, silicon steel, phosphorus steel, brass, piano wire
4. Certification: IATF 16949, ISO 9001, GJB 9001C-2017, GB/T24001-2016/ISO14001: 2015
product name | High Technology Good Quality circle hook extension springs |
OEM/ODM | available |
Wire diameter or thickness | 0.1mm~20mm |
Finishing | electroplating, spraying, electrophoresis, anodizing, spraying, powdering, heat treatment, black oxide layer, anti-rust oil, etc. |
Advantages | high quality, competitive price, first-class automatic production equipment, safe packaging and timely delivery. |
Applications | Precision equipment, electronics, toys, door locks, mechanical equipment, various vehicles. |
Packing | Plastic packaging inside, and then packed in cardboard or wooden boxes. Or customize the packaging according to your requirements. |
Delivery time | 5~15 days |





Provide spring authoritative testing agency report.
Specially customized tempering furnace, the spring produced can be tempered in the first time
Precision spring machine
Precision spring machine
If there are no drawings, samples and related parameters, our company's unique Zhongyuan Spring Research Institute can design according to your actual situation.
fatigue test, elastic test, tensile test. Use a professional instrument to test the compression range and spring force of the spring, the compression of the spring under a specific pressure and tension.
Provide spring authoritative testing agency report.


Packaging details : According to factory packaging,or according to your requirements.
Delivery details : Delivery according to contract
A: We are a 32-year-old factory, we pick up OEM orders.
A: We will quote you within 24 hours after receiving your inquiry. If you are in urgent need of price, please call us or let us know in your email address so that we can respond to your inquiry first.
A: If you have product drawings or samples, please send them to us and we can customize them according to your requirements. We will also provide our professional advice on products to maximize design performance..
A: It usually takes 5~15 days, depending on the quantity you need. If time is urgent, you can arrange it.
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