กกก๑ Comprehensive Control
The ZGFQ valve quality control system is strictly following the ISO9001 and API6D-22. All necessary documents are fully compiled. Every step of material procedure is recorded; Test and inspection should be processed to every valve; Tools and equipments would be calibrated timely; Nonconformance would be corrected; Employees would be trained and educated regularly.

 

ก๑ 100% Qualified Valves
Every casting to be visional tested and the MTR from supplier to be carefully check, then the casting can be in machining procedure. Every finished valve before delivery should passed the high pressure hydro test and low air pressure test. Every valve from ZGFQ is capable for pass more strict standard than API598.

 


Size In
ZGFQ standard
Seat leakage Rate API 598
Low pressure test
High Pressure Test
2"
0
0
0
2.5"~6"
0
24
12
8"~12"
0
40
20
14"~16"
0
56
28


Leakage Rate are in bubbles for low-pressure test and drops per minute for high-pressure test.