That is standard chain for B series with duplex.
The majoy material of Standard Chain are SUS304, SUS310, SUS316. They possess the features of high strength, high wear resistance and long life.
We have 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 work and the products have been sold to the countries and regions in European countries and America, Central and South Africa in addition to South-east Asia, which are very duplex chain china popular among customers.