Strong Double Hook Tension Spring for Swing Chair
Strong Double Hook Tension Spring for Swing Chair
| Product Name | Strong Double Hook Tension Spring for Swing Chair |
| Material | Stainless steel;Carbon steel;Copper;According to customer demand |
| Surface Finish |
Hardening;Polish;Anodized;Sandblasting;Powder coating;Vacuum Plating;Nickel; Zinc;Chrome;Tin;Silver plating etc. |
| Main Products | Compression Spring;Extension Spring;Torsion Spring;Wire forming spring and so on |
| Test Equipments |
Projector;Digital hardness tester;Digital torsionstrength tester;Digital tension and compression strength tester;Elasticity tester;Life tester;Salt spray test machine etc. |
| Quality Control |
1.IMDS,PPAP,SPC,FMEA,MSA quality management. |
| 2.Tolerance control : DIN, JIS Standard. | |
| 3.Manufacturing processes inspection per hour and per batch. | |
|
4.Traceable management thoughout all process from raw material to customers. |
For more products, please click here:
https://yzdonva.en.alibaba.com/?spm=a2700.details.cordpanyb.1.21bb782ddLEcvP
Yangzhou Donva Hardware Spring Co.,Ltd, founded in 2004, located in Jiangyang Industrial Park Yangzhou City, Jiangsu Province, is one of the largest spring and aluminum parts manufacture in Southeast China.
Owing to experienced technicians, precision machinery and strict quality control system, Donva enables itself to handle various OEM/ODM orders based on ISO/TS 16949 standards. Donva is also ISO9001, SGS and RoHS certificated.
Q: Are you trading company or manufacturer ?
A: We are manufacturer.
Q: What information should I give to you for inquiry?
A: If you have drawings or samples,pls feel free to send us,and tell us your special requirements such as material ,tolerance,surface treatments and the amount you need,ect .
Q: How long is your delivery time?
A: Generally it is 10-25 days, or according to quantity.
Q: Do you provide samples ?
A: Yes, the sample fee will be refunded when place the order.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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