ODM ODM metal flat door lock spiral double torsion spring

We are specialized in all various kinds of automobile brake chamber springs that used on motorbike,cars ect:

1). Wire diameter from 0.1mm-20mm.

2). Material: carbon spring steel, alloy spring steel, stainless spring steel, etc.

3). Finish: black oxide, zinc/nickel/chrome plating, power coating, passivate, oiled to prevent rust, and so on.

4). High good quality and long service-life.

5). Good hardness and resistance to both high and low quality.

6).We can offer you samples free after you accept our price.

Are you factory?

We are a factory in manufacturing and exporting pipe fitting and repair clamp. Being in the lines for nearly 15 years, we can confirm that our products are of reasonable price and good quality .

How about application field?

the surface and underground engineering,ship building/sea oil platform,water/gas supply,power and industrial production,sewage treatment and maintenance etc.Such as Crude oil line,natural gas pipelines,water drainage pipelines, aviation/car special line,lubricating oil pipelines blunt water power line,sea water/fresh water pipeline etc.

Why choose us?

1.Many years Industry and export experience 
2.Extensive product range with good quality
3.Complete pre-sales ,after sales service team to ensure 
   customer's needs and preferences.
4. Professional laboratory ,research and development team

What's your difference from others?
1.The factory and office together, to facilitate direct communication and follow up production
2.Produce per customer requirement strictly, test and  quality control.
3.Universality: Avaliable for many kinds of metal pipes, and for less misaligned and different                diameter-pipes coupling, especially for emergency quick repair.
4.Economy: Coupling despite of the pipe thickness and no need furbishing of the pipe ends, simple handing and cost-saving.