Total quantity

500

Trial quantity

500

Oil temperature in trial

Normal

Project

Records

Test specification

Result

Running times

Pump change direction 5 times when on load

1. outside leakage not allowed

2. no anomalies

Qualified

Pressure test

Pressure:35MPa

1. outside leakage not allowed

2.parts not scratched

3.no part permanent deformation

Pressure hold

Time:15min

Trip inspection

If there is anomaly when cabin pump is running on load

Rebound, air travel, jam are not allowed

Qualified

Inside leakage test

Valve in middle, if it can seal the oil

Must seal the oil

Yes

Outside leakage test

If there is leakage in test

No leakage is allowed

No

Visual inspection

No peeling paint on the surface, no bubble, other requirements, see the product design

Result: this is test is according to<test requirements of hualong hydraulic products>, in line with national factory standards.

                                                Quantity qualified: 10       Pass rate:100%

Tester: Humingxu            Inspector: Zhangzhiyong               Date of test:May7,2022