QUALITY CONTROL--- ONLY THE QUALIFIED MATERIAL WILL BE SHIPPED
1, RAW MATERIAL CONTROL(MOTHER PIPES)
REVIEW RAW MATERIALTESTING REPORTS.
CHEMICAL TESTING ON HEAT NO. BASIS
DIMENSION CHECK INSIDE AND OUTSIDE
SURFACE CHECK
WEIGT CHECK
2, MANUFACTURING CONTROL
IDENTITY OF EACH GRADE

DIMENSION CHECK DURING EACH PROCESS
INSIDE AND OUTSIDE SURFACE CHECK DURING EACH PROCESS
ANNEALING TEMPERATURE & TIME CONTROL
PROPER PICKLING
3, FINAL INSPECTION BEFORE DELIVERY
EACH PIPE OR TUBE HAS DIMENSIONAL & VISUAL CHECK
PMI TESTING ON HEAT NO. BASIS OR SIZE BASIS
MARKING CHECK
EACH PIPE OR TUBES HAS ITS NON-DESTRUCTIVE TESTING (UT, ET, HYDRO)HARDNESS TESTING
IGC CORROSION TESTING ACCORDING TO A 262 PRACTICE "E"
TENSION TESTING INCLUDING TENSILE, FLATTENING, FLARRING
4 THIRD PARTY INSPECTION
THIRD PARTY INSPECTION AVAILABE POINTED BY THE CLIENTS like LLOYDS BV SGS