... .Tensile strength:594Mpa(Min) 3.Standard type:D14-D40mm Steel bar straight-thread connecting sleeve1.Material:45# steel2.Tensile strength:594Mpa ... °/ 60°5.Screw 2.5, 3, 4Baoding Henglian Mechanical Co.,Ltd is OEM supplier founded in 1986.We have our own ... ,Russia,Italy,Poland,Denmark,Singapore,Malaysia,and so on. Steel bar straight-thread connecting sleeve