Raw material:   

China standard:  Cr12, Cr12MoV, Cr12Mo1V1, Aluminum bronze etc.

JIS:   SLD,   SKD11   

DIN:  1.2080   1.2379     

ASTM:  D3     D2.   H13

Machining process:

• Raw Material Preparation–Forged Bar
• Rough Machining
• Semi-finish Machining
• Vacuum Heat Treatment
• Numerical Control Finishing machining
• Wire Cutting
• Product Inspection–Dimensions,Form AndPosition Tolerance
• Product Inspection–Hardness
• Vacuumized Packing
• Stent Installation
• Final Packaging

Roll Hardness:58~62HRC          

Templates tolerance ≤0.05mm

Roughness

(1): Inner bore 　　　　

(2): End and other surface  

Inner Bore Diameter Tolerance: Class IT7.       Keyway tolerance: Class 9.

Geometric Tolerance:

        1)Radial run-out ≤0.05mm

       2)Coaxially≤0.05mm

       3) Fce parallel ≤0.05mm

Ultrasonic Test before packing.

Documents provided:

       1)Roll gauge (Template).

       2)Material test certificates.

       3)Raw Material Ultrasonic Test

       4)Heat treatment report.

       5)Product inspection report (Out-diameter, Inner hole, Thickness, Cavity, Hardness…)