Quality Control Procedures
High Frequency Welding
Additional information :
No additional element in welding area
No change of chemical composition
Stable welding properties
Mechanical test
This procedure means to make sure pipe mechanical properties are within tolerance
Thickness Check
This quality control procedure means to make sure tube thickness is within tolerance
Hydrostatic Test
The purpose of this quality control procedure is to make sure there is no leakage within standard pressure
Expand Test
This procedure means to make sure welding is strong enough to endure process in customer
OD Check
This quality control procedure means to make sure tube OD or dimension is within tolerance
Length Check
This quality control procedure means to make sure specified length is within tolerance
Flattening test
This quality control procedure means to make sure no crack on welding area when processed in customer