Locomotive/Train spring are used on  trains as a main parts of Shock Absorber . 

Usage:

Minimize the effects of contact between wheel and rails during the journey, competently absorbing vibrations and reducing impact sound to guarantee smooth travel.

These customized solutions are developed in close collaboration with the customer on the basis of clearly defined specifications.

Strictly controled producing process :

Quality control

Kunshan Alex places great emphasis on quality control and management of the product-railcar coil spring(we'll called coil spring in the following), which is a vital factor in trains and their functionality. Our coil spring production is fully controlled in accordance with the ISO9001-2008 quality system, and we have also obtained a railway product production license from the Chinese Ministry of Railways. We have a full set of testing equipment to ensure that all our coil spring 's quality to meet customers' requirements..

Kunshan Alex Railway Fastening Co., Ltd. is an ISO 9001/2008 certified company. All processes are in accordance with the requirements of the ISO quality management system. From raw material to the finished products, we operate in accordance with standard procedures. We have strict quality control systems for suppliers:

1. For the inspection and testing of raw materials, we require suppliers to provide inspection indicators such as production batch number, chemical composition, and mechanical properties.

According to the different requirements of the products, we make corresponding physical and chemical tests and inspections. If the result does not meet our requirements, the materials will be rejected, only the materials that meet standard can be accepted.

2. For semi-finished products and our suppliers who provided them, we regularly organize quality control coordination meetings, and provide technical support and guidance,to ensure that qualified products to be delivered to our customers before shipment.

3.Our quality control inspectors to take sampling and batch testing to detect and provide a certificate of raw materials and other means in the detection process control.

Packing and shipment

We consider the most  safe and costs-saving ways of packing and shipment for clients ,and respect client's own idea of their choices.

We accept a variety of styles of spring customization,if you want to custom,please kindly supply bellow information:

♦Material

♦Wire diameter

♦Surface treatment

♦Inner diameter and outer diameter(ID and OD)

♦Free length and work length

♦Total coils and active coils

♦Application

Of course,a detailed spring drawing is the best.