1. Chrome thickness: 0.2mm-0.3mm 2. Chrome layer hardness:> HV900 3. Bore surface roughness: Bore straightness error: <0.02mm 4. Bore cylinder error: <0.02mm / support 5. Cylinder diameter: φ140mm ~ φ360mm 7. Length: according to customer’s request 8. Pledge: high quality products and excellent maintenance 9. Capacity: 50,000-80,000 cbm 10. Application: concrete pump with brand Putzmeister,