HHF's roller includes straightening roller, supporting roller, working roller, middle roller etc.
1. We purchase best material from famous steel mill in China, steel making process is EAF or ESR steel.
2.Upon receipt of raw material, HHF's QCP will inspect raw material quality before our production.
3. After each process, QCP will perform inspection, we will record the inspection result and keep the record according to the requirements of QMS.
4.We provide Mill certificate, includes Chemical compostition, Mechanical properties, UT test, MPI test etc
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