Specification details: 1. Main use: widely used in making  automobiles, motorcycles, shocks, absorption                   machine structures and hydraulic pressure machines 2. Features: precision in sizes and good roughness on inner and outer surface 3. Standard: GB3639-2000 and GB8713-88 4. Steel grade: 10#, 20#, 35#, 45#, 40Cr, 37Mn5,  SAE 1536 H.T.5. Outer diameter: Φ10.00mm-Φ80.00mm 6. Thickness: 0.7mm-7.00mm 7. Length: as per customers' requirements8. Packing:In bundle with strip or in carton box

seamless tube for motorcycle front fork