1. Hydraulic cylinder tube

2. Standard&material: ASTM A106 Gr.B,Gr.C,ASTM A519 SAE1020,SAE1045,SAE1026,SAE4130, SAE4140,EN10305-1 E235,E355,C35E,C45E,DIn1629 St52,DIN2391 ST52.3,ST45,etc

3. Size range: 50mm(ID)*40mm(W. T) - 480mm(ID) * 400mm(W. T)

4. Manufacture process: Cold-drawn

5. Treatment method of internal surface: honed, skived&roller burnished

6. Delivery condition: Cold-drawn/hard, cold-drawn/soft. Heat-treated tubes can be negotiated for production&supply.

7. Roughness of internal surface: 0.125um - 4um.

8. Straightness: 0.3/1000, 1.0/1000, 1.5/1000

9. Size tolerance of ID: H7,H8,H9.

10. Packing: To be /confirm/ied.

11. Standard packing: In bundles tied with steel strips.

12. Marking, oil-coating, end-protection to be /confirm/ied.