That is standard chain for B duplex chain china series with duplex.
The majoy material of Standard Chain are SUS304, SUS310, SUS316. They have the characteristics of high strength, high wear level of resistance and long life.
We’ve several rows chains to your requirements.
Twin track is a professional manufacturer of roller chain. There are two main categories: Stainless chain and carbon steel chain.
We have established a nationwide sales net function and the products have been sold to the countries and regions in Europe and America, Central and Southern Africa and also South-east Asia, which are very popular among customers.