每只产品出厂都有出厂合格证，包括化学成品，机械性能，UT,MPI 等且有唯一的编号，可供追溯。

原材料钢锭冶炼工艺采用电弧炉+精炼+真空脱气

1、原材料钢锭冶炼工艺采用电弧炉+精炼+真空脱气

2、收到原材料之后，HHF质检员会检测原材料的质量，然后才允许投产。

3、在生产的每一个环节，质检员都会对产品进行检测，检测结果会根据质量管理体系记录保存。

4、每只产品出厂都有出厂合格证，包括化学成品，机械性能，UT,MPI 等且有唯一的编号，可供追溯。

1. We adopts steel ingot from famous steel facotory in China, EAF or ESR steel.

2.Upon receipt of raw material, HHF's QC employees will die-stamp the exclusive serial number on both ends of material.

3. After each process, QC department will perform inspection, they will record the inspection result and keep the record according to the requirements of QMS.

4.We provide Mill certificate, includes Chemical compostition, Mechnical properties, UT test, MPI test etc