N 9020-1200HL ，According to the assembly sequence: the first piece, with a length of 1200, is rolled at both ends, the second piece, with a length of 1200, is rolled at both ends, the third piece, with a length of 1200, is rolled at both ends, and is subject to bending. The arc height of the assembly leaf spring is 140 ± 5mm, the middle straight section 240, the end straight section 230 at both ends, and the center hole is φ16.5.This product is suitable for Nissan trucks, and its main market is in Southeast Asia and Indonesia.
1、We are a manufacturer of parabolic and conventional leaf springs. The wide product range is suitable for all sorts of vehicles, from small trailer springs to large, heavy-duty and off-road vehicle springs, the lightest utility vehicles to the heaviest trucks, built for long-haul.
2、Our custom manufactured leaf springs are designed to meet the most precise specifications or tolerances. We take special pride in our high quality standards and service reputation. We have been supplying our customers with the finest leaf springs.
3、After the rolling and forging operations, the spring leaves are quenched and tempered to achieve the required mechanical properties. They are then shot-peened to increase the fatigue life. Magnetic particle inspection tests are carried out when required.
|1) Raw matrail .|
|Thickness less than 20mm. We use material SUP9|
|Thickness from 20-30mm.We use material 50CRVA|
|Thickness more than 30mm. We use material 51CRV4|
|Thickness more than 50mm. We choose 52CrMoV4 as the raw material|
|2) Quchenging Process|
|We strickly controled the steel temeprure around 800 degree.|
|we swing the spring in the qenching oil among 10 seconds according to the spring thickness.|
|Each assmembing spring set under stress peening .|
|Fatigue test can reach over 150000 cycus|
|4) Electrophoretic paint|
|Each item use electrophoretic paint|
|Salt spray testing reach 500hours|
Since its establishment, our factory has been developing first world class products with adhering the principle
of quality first. Our products have gained excellent reputation in the industry and valuabletrusty among new and old customers..