钢材类
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合金结构钢
ALLOY CONSTRUCTION STEEL
Specification:

Hot-Rolled Round Bar:φ10~160mm
Cold Drawn Bar & Coil: φ4~75mm
Forged Round Bar : φ80~700mm
Cold Drawn Hexagon Bar: 14~65mm
Hot-Rolled Square Bar:6022002mm
Forged Square Bar:8027002mm

Standard:GB3077-88 40Cr  40CrMo  40CrNiMoA 45Mn2