To satisfy customers' expectations, Dewei is totally committed to implementing and maintaining the Quality Management System. Quality problem arising in various areas are to be identified and solved with speed, technical and efficiency.

Destructive Testing
Product Analysis/Chemical Analysis
Tensile Test at room temperature and hot tensile test
Bend Test
Impact Test up to -196°C
Micrographic Examination up to 500X
Macrographic Examination
Ferrite Detection
Examination acc. to ASTM E562
Corrosion Test (ASTM A262; ASTM A923; ASTM G48; ASTM G28)
Hardness Test (also NACE MR 01-75)
Vickers Hardness Test
Rockwell Hardness Test

Non Destructive Testing
Eddy Current Flaw Detector
Hydrostatic Testing Machine 
X Ray Flaw Detection
Penetrant Examination
Ultrasonic Examination
Magnetic Particle Examination
Infrared Carbon Sulfur Analyzer
Direct-reading Spectrometer

The main certificate
Pressure Pipeline Type Test
API 5LC CRA Line Pipe
ISO 9001:2008 Quality Management System Standards
PED certificate 

TüV Rheinland ASME Certificate
ISO 14001 Certfication
ISO 18001 OHSAS Certification
GOST Certificate

Foreign Trade Operator Registration Form
Manufacture License of Special Equipment (GradeA2)
Work Safty Standardization Certificate (Grade II)
CCS Certificate 
BV Certificate
LR Certificate