1. Commodity: Hard chrome plated concrete delivery cylinder
2. Size range: ID of 150mm-280mm
3. Steel grade: CK45,SAE 1045,ST52，E355,E410,E470
4. Manufacture method: cold drawn, hot rolled+deep hole bored
5. Delivery condition: Stress relieved, Quenched+Tempered
6. Thickness of hard chrome plating: 0.2mm min on both sizes.
7. Hardness of chromed layer: HV800 min
8. Machining,Threading, Turning as per drawing.
9. External painting: as per request
10. Packing: Plywood boxes.
