The Special Head Type are made by the heat treatment or by the lathe machine.
* The Lifting socket are widely used in the application of concrete precast construction place.
* The steel materials (4.8/6.8/8.8 grade) or S.S.Steel/SS 304 Or SS 316 are avariable.
* We are able to tap Metric-Threads,Rd-Thread,Rb/Tb-Thread and Inch-Thread inside.
* We also could make the special sizes according to the sketches or the samples.