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Customer’s technical documents review
Analysis of product process
Analysis of mechanical property and chemical composition to material grade
Products’ mechanical property satisfy customer’s requirement or not
Analysis of heat treatment process
Supplier review
Supplier survey
Supplier review
First sample test
Small-batch test
Supplier approved
Sign technical agreement with supplier
Supplier qualified list
Every heat NO: inspection
Regular check
Internal inspection
Raw-material re-inspection
Raw-material UT
Temperature control(Forging heating & heat treatment)
Forging ratio control
Product UT/MT
Mechanical property
Product traceability