1.& nbsp; & nbsp; traction pin in accordance with the shape can be divided into mushroom type, cross type, double spoon type, "L" type, etc., in accordance with the diameter of the traction pin can be divided into 50 (mm) and 90. According to the standard of our country, the traction pin can be divided into A type and B type according to the shape, and can be divided into welding type and assembly type according to the assembling method. Its processing materials generally use carbon steel and alloy steel.