5155 Leaf Spring Steel Flat Bar Information:

1. Spring Raw material & flat bar after-cutting; 

2. Grade from SUP9(5155), SUP9A(5160); 

3. Width from 44.5mm to 140mm; 

4. Thickness from 6mm to 50mm; 

5. Length 5800mm or custom-built length. 

6. Other construction steel available.

5155 Leaf Spring Steel Flat Bar Detail Photos:

Common questions and answers 

1.Question: Have some method used for cleanliness?

      Answer: LF refining，Bottom-blowing Argon Process，Desulfurization，aluminium                       deoxidation

2.Question: What’s the degassing process?

      Answer: VD process.

3.Question: What’s the type of casting process used, including quality inspection techniques employed?

     Answer: 180*180 arc continuous caster,.Macro Testing in billets and visual inspection.

4.Question: How frequency of inspection?

      Answer: Macro testing frequency：Visual inspection frequency:100%.

5.Question: About quality control plan?

     Answer: As to quality control ,we according to the ISO9001 quality management system                 requirements to control product quality.

6.Question: international standards   

     Answer: Quality system standard：I2008.

           SUP9/SUP9A products standards: JIS G 4801 .

           51CrV4/52CrMoV4 standards:EN 10089.

           60Si2Mn/50CrVA/60CrMnBA standards:GB/T 1222

7.Question: What’s rolling dimensions, flatness, concavity, statistical analysis regarding 

                    melting practices?

      Answer: Rolling dimensions:60-150mm×6-50mm. Surface finish. 

8.Question: melting scrap rates

      Answer: 90% Hot metal,10% scrap.

9.Question: ND (non-destructive) inspection types 

      Answer: We have no ND but macro testing in products .

10.Question: frequency and ND scrap rates 

        Answer: Macro testing frequency in  products：for each batch.

 11.Question: Material handling techniques used to prevent damage during manufacturing,

                                packaging standard employed to prevent shipping damage and corrosion

        Answer: Transported by traveling crane with steel Rope against handling damage.

             Rectangular stacking, automatic packing or hand press-packing.

             Prevent rusting: spray rust preventive oil on the surface.