Steel grade: alloy steel 4340, 4140etc; Size: according to drawing; Lead time: within 30days Forged hollow bar, could be ... : H13, O1, D2, D3, D6, 1045, P20, M2, H11, 1.2311, 1.2314…etc. Power: S45C,EN29A, 20CrMo, 1Cr13, 2Cr13, 24CrMoV, 27NiCrMoV16 ...