King pin is a standard metal part used in semi-trailer to connect tractor and trailer. Traction pin can be divided into mushroom type, cross type, double spoon type, “l” type and so on, according to the diameter of the traction pin can be divided into 50 mm and 90 mm.
1. Material : 40CR
2. Material Hardness : can be reached 32-36HRC
3. Material grade : after debugging can reach 4.9.
4. Plate thickness : 20mm(can be customized according to customer requirements)
5. Note:The bolt torque setting 190NM
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