Rig tong pins, shackle pins and bolts must be secured with the proper size of splitpins.
大钳销子，尾绳销子和螺栓都必须用适当尺寸的开口销加以固定。
2
In particular ensure that fastenings and splitpins are compatible and of the highest quality.
尤其是确保紧固件和开尾销的兼容性和高质量。
3
A formula is set up for two rotating angles of steering pins in a non-symmetry split-steering mechanism and an optimum design mathematical model is made for it.