brake spring-T3030

1. Material: 60SiMnA/50CrVA/55SiCrA alternative
 

2. Heat treatment: general/oil quenching tempering steel
 

3. Wire dia.: 12mm/12.5mm//13mm/14mm alternative
 

4. O.D.: 132mm,136mm, and others alternative
 

5. Free length: 175/210mm alternative
 

6. No. of total coils: 4.5/5.75 alternative
 

7. TSI16949, ISO14001 certified