Flat wire outer link plate: It cooperates with the flat wire surface of the pin shaft to ensure the parallelism of the flat wire surface of the pin shaft and prevent the rotation of the pin shaft.

H-shaped outer link plate: It is used for fixing with the hopper.

Chain plate processing technology: blanking (punch press or blanking special machine, laser cutting machine) → typing (punch press) → rough punching (punch press) → heat treatment → straightening (punch press) → semi - fine punching (punch press) → surface treatment (shot blasting machine) → fine punching (punch press).