That is standard chain for B series with duplex.
The majoy material of Standard Chain are SUS304, SUS310, duplex chain china SUS316. They have the characteristics of high strength, high wear resistance and long life.
We have several rows chains to your requirements.
Twin track is a professional producer of roller chain. There are two main types: Stainless chain and carbon steel chain.
We have established a nationwide sales net work and the products have already been sold to the countries and areas in European countries and America, Central and South Africa as well as South-east Asia, which are quite popular among customers.