● Size: OD16-300 mm   WT2-30 mm
● Material: ST37, ST45, ST52, 1035, 1045, CK45, E355, A179, A192, 10#, 20#, 35#,  45#, GCr15, 20Cr, 40Cr, 15CrMo, 20CrMo, 35CrMo, Q345B, 16Mn, 27SiMn,12Cr1MoV
● Tolerance: OD +/-0.05mm   ID+/-0.05mm
● Application:  Precision machine parts, automobile, hydraulic system, diesel engine, engineering machinery, textile machinery, steel bar connecting sleeve