1.Description of garage door torsion springs
| Material | 65MN,82B carbon spring steel wire |
| Wire diameter | 0.1mm~80mm. |
| Processing craft | Material purchased-production-heat treatment-surface treatment-package-shipping. |
| Finish | Zinc plated,Oil |
| Heat treatment | Tempering, Stress relieving, Spheroidizing. |
| Application | hardware, plastic parts, toy, automobile,electrommunication, lamps and lanterns, clamp, switch, mirror, gift, art ware, molds, household appliances. |
| Quality Standard | ISO9001:2000, SGS, ROHS. |
| Payment terms | T/T,L/C,Western Union or Paypal. |
| Sampels availablity | For free, The buyer is responsible for the freight. |
| Type of shipping | By sea, air, express. |
| Lead time | Normally in 7 working days, but based on the order quantity. |
| Packing | PE bags, cartons, pallets. |
| Warranty | 100% return goods or refund payment if quality problem. |
| Founded date | Established in 1984, and have 30 years experiences in spring production |
2. Pictures Of garage door torsion springs
3.Production Flow Chart
1.Information Of Company
Shangyu Xinyao Metal Products Co., Ltd. is a professional manufacturer specializing in various springs since the year of 1984.With 30 years development, We have around 150 workers, fix asset of 30 million RMB and covers an area of about 15000 square meters.Products have been exported to more than fourty countries.
To confirm the steady quality,We built a professional technical personnel,equipped with advanced testing equipments, including metallographic analyzer, raw material bend testing machine, raw material torsional testing machine, microcomputer spring tensile and compression testing machine, spring hardness testing machine, magnetic automatic defect detector, fatigue testing machine, salt spray testing machine, carbon-coating tester, chemical content analyzer ext.
2.Factory Overview
3,Quality Control Equipment
4.Certificate
5.Customer Feedback
6.Why Choose Us
7.Contact Us