Trailer Leaf Spring, Brand Name : Chang Tong

We are offering trailer leaf spring.
leaf spring manufacturing process:
1.cutting of flat bar
2.center hole punching drilling
3.end heating process forming (hot & cold process)
4.heat treatment
(1).heating
(2).camber forming
(3).quenching
(4).tempering
5.surface preparation
(1).shot peening stress peening
(2).painting
6.assemble
(1).presetting & load testing
(2).print touch-up
(3).marking & packing
china conventional leaf spring payments & terms:
* moq: 50 sets
* fob price: 9-90usd
* payment terms: lc, tt
* supply capacity: 5000 tons per year
* delivery time: 25days after confirmed
* delivery port: qingdao, xingang, lianyungang
* package: by steel palletwooden pallet; 23t in 1x20fcl.