precision seamless steel pipe, used in motorcycle industry, cylinder, shock absorber, jack, hydraulic pressure machine precision seamless tube Specification details: 1. ... -2000 and GB8713-88 4. Steel grade: 10#, 20#, 35#, 45#, 40Cr, 37Mn5, 20Cr5. Outer diameter: Φ5.00mm-Φ80.00mm 6 ... available8. Packing:In bundle with strip or in carton box Shock Absorber seamless steel tube