WR vs WH Series Chain: What's the Difference and How to Choose
Two series. Same dimensions. Different heat treatment. If you are selecting a welded steel mill chain for a drag conveyor, bucket elevator or heavy mill application, you have probably seen WR and WH options side by side and asked: what is actually different? The short answer is the heat treatment scope. The long answer — and how to use it to make the right choice — is below.
Aug 5,2026













