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steel
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ALLOY TOOL STEEL
Specification:

Hot-Rolled Round Bar:φ10~160mm
Cold Drawn Bar & Coil: φ8~40mm
Forged Round Bar : φ80~700mm
Forged Square Bar:8027002mm

Standard:

GB1299-85 Cr12,Cr12Mo1V1,Cr5Mo1V
9Mn2V,CrWMn,9CrWMn,4Cr5MoSiV,
4Cr5MoSiV1 Cr12MoV