... .Tensile strength:594Mpa(Min) 3.Standard type:D14-D40mm Steel bar straight-thread connecting sleeve1.Material:45# steel2.Tensile strength:594Mpa( ... ,forging,CNC machining with a wide range of materials,stainless steel,carbonsteel,iron,aluminum,brass and so on.The products we ... ,Germany,Russia,Italy,Poland,Denmark,Singapore,Malaysia,and so on. Steel bar straight-thread connecting sleeve