Hollow Drill Steel Bar

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Hollow Drill Steel Bar
Posting date : May 16, 2007
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Free Member Scince May 16, 2007
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METALS | Iron and s
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72-
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Hollow Drill Steel Size: Hex: B22,B25 Round: Φ32,Φ38 A type of steel specially used in drill rod manufacture,high intension and toughness. According to the section,it can be divided into hexagonal steeland round steel. Hexagonal steel mainly used in producing Integral drill rod,while round steel in extension drill rod. The main size and specifications as below: Hot Rolled Hexagonal Hollow Drill Steel Bar Steel Grade: 95CrMo as per Chinese Standard with following chemistry: C: 0.92-1.03PCT; Si: 0.25-0.45PCT; Mn: 0.25-0.45PCT; Cr: 0.80-1.20PCT; Ni: 0.25PCT MAX.; Mo: 0.20-0.30PCT; S,P: 0.025PCT MAX; Cu: 0.30PCT MAX. Physical Specification σb 1320Mpa δs 9% Ψ 25.5% σ-1
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