1/Item:seamless steel tube/seamless steel tubing for Automotive shock absorber 

1.ultimate  tensile   strength (min)--600MP

2.Yield  strengths  (min ) --520Mp

3.Elongation(min)--22%

4.Straightness  0.5--1/1000

5.Non-alloy

6.Surface --galvanized

7.Non.secondary

8.The  cross  section shape is  round .

9.API  pipe

10.Certification  UL